# An Account of the Barometer, and the State of the Weather, at Dublin, from the 7 of March 1752, to the 28 of February 1753, by James Simon, Esquire, F. R. S. and Secretary of the Incorporated Society at Dublin: Communicated by Mr. Henry Baker, F. R. S.

**Author(s):** James Simon, Henry Baker  
**Year:** 1753  
**Journal:** Philosophical Transactions (1683-1775)  
**Volume:** 48  
**Pages:** 9 pages  
**Identifier:** jstor-105163  
**JSTOR URL:** <https://www.jstor.org/stable/105163>  

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XLIX. An Account of the Barometer, and the State of the Weather, at Dublin, from the 7 of March 1752, to the 28 of February 1753, by James Simon, Esquire, F. R. S. and Secretary of the Incorporated Society at Dublin: Communicated by Mr. Henry Baker, F. R. S.

Dear Sir,

Dublin, Sept. 4, 1753.

I NOW send you my journal of the weather for the last year, from the 7 of March, 1752, to the 28 of February, 1753. You will, perhaps, find it too minute; but whatever fault you find in it shall be rectified for the future, if you are so kind as to let me know, how I should proceed to render it useful. Deal with me as a friend; inform me of my mistakes; and if you do not think it deserves to be laid before the Royal Society, I beg you will not let it be seen; if otherwise, you have my leave to lay it before them. My chief ambition would be to deserve their approbation and esteem: of this you may assure them, and of my sincere respect and regard.

I have observed, that the friction is so great in the common barometer, by the smallness of the tube, that I wrote to London for a larger tube. It is something more than one quarter of an inch clear in the bore; and it took me two pounds and a quarter of clean purified mercury to fill it. The cistern, which receives the mercury, is pretty large, with a wide mouth; and is cover'd with a silk gauze, besides the usual
My Barometer was finished the 6th of March. The Tube is a quarter of an inch clear in the bore, and took two pounds and a quarter of clean mercury to fill it.

| April | Morning | Noon | Evening |
|-------|---------|------|---------|
| 1     | Fr      | 2   | Fg      |
| 2     | Fr      | 2   | Fr      |
| 3     | Fr      | 2   | Fr      |
| 4     | Cy Rn    | 3   | Rn V    |
| 5     | Cy      | 3   | Fr V    |
| 6     | Cy      | 1   | Cy      |
| 7     | Cy      | 1   | Cy      |
| 8     | Cy      | 1   | Cy      |
| 9     | Cy      | 1   | Cy      |
| 10    | Cy      | 1   | Cy      |
| 11    | Cy      | 1   | Cy      |
| 12    | Cy      | 1   | Cy      |
| 13    | Cy      | 1   | Cy      |
| 14    | Cy      | 1   | Cy      |
| 15    | Cy      | 1   | Cy      |
| 16    | Cy      | 1   | Cy      |
| 17    | Cy      | 1   | Cy      |
| 18    | Cy      | 1   | Cy      |
| 19    | Cy      | 1   | Cy      |
| 20    | Cy      | 1   | Cy      |
| 21    | Cy      | 1   | Cy      |
| 22    | Cy      | 1   | Cy      |
| 23    | Cy      | 1   | Cy      |
| 24    | Cy      | 1   | Cy      |
| 25    | Cy      | 1   | Cy      |
| 26    | Cy      | 1   | Cy      |
| 27    | Cy      | 1   | Cy      |
| 28    | Cy      | 1   | Cy      |
| 29    | Cy      | 1   | Cy      |
| 30    | Cy      | 1   | Cy      |

| July   | Morning | Noon | Night |
|--------|---------|------|-------|
| 1      | Cy Rn   | O   | Fr    |
| 2      | Wm      | 12  | Rn    |
| 3      | Cy Rn   | 8   | Rn Fr |
| 4      | Cy      | 9   | Fr    |
| 5      | Fr      | 11  | Fr    |
| 6      | Cy Rn   | 11  | Fr    |
| 7      | Cy      | 7   | Fr    |
| 8      | Cy      | 7   | Fr    |
| 9      | Cy      | 7   | Fr    |
| 10     | Cy      | 7   | Fr    |
| 11     | Cy      | 7   | Fr    |
| 12     | Cy      | 7   | Fr    |
| 13     | Cy      | 7   | Fr    |
| 14     | Cy      | 7   | Fr    |
| 15     | Cy      | 7   | Fr    |
| 16     | Cy      | 7   | Fr    |
| 17     | Cy      | 7   | Fr    |
| 18     | Cy      | 7   | Fr    |
| 19     | Cy      | 7   | Fr    |
| 20     | Cy      | 7   | Fr    |
| 21     | Cy      | 7   | Fr    |
| 22     | Cy      | 7   | Fr    |
| 23     | Cy      | 7   | Fr    |
| 24     | Cy      | 7   | Fr    |
| 25     | Cy      | 7   | Fr    |
| 26     | Cy      | 7   | Fr    |
| 27     | Cy      | 7   | Fr    |
| 28     | Cy      | 7   | Fr    |
| 29     | Cy      | 7   | Fr    |
| 30     | Cy      | 7   | Fr    |
| 31     | Cy      | 7   | Fr    |

| August | Morning | Noon | Night |
|--------|---------|------|-------|
| 1      | Cy Rn   | 11  | Rn    |
| 2      | Cy Rn   | 13  | Cy Rn |
| 3      | Cy Rn   | 14  | Cy Rn |
| 4      | Cy Rn   | 15  | Cy Rn |
| 5      | Cy Rn   | 16  | Cy Rn |
| 6      | Cy Rn   | 17  | Cy Rn |
| 7      | Cy Rn   | 18  | Cy Rn |
| 8      | Cy Rn   | 19  | Cy Rn |
| 9      | Cy Rn   | 20  | Cy Rn |
| 10     | Cy Rn   | 21  | Cy Rn |
| 11     | Cy Rn   | 22  | Cy Rn |
| 12     | Cy Rn   | 23  | Cy Rn |
| 13     | Cy Rn   | 24  | Cy Rn |
| 14     | Cy Rn   | 25  | Cy Rn |
| 15     | Cy Rn   | 26  | Cy Rn |
| 16     | Cy Rn   | 27  | Cy Rn |
| 17     | Cy Rn   | 28  | Cy Rn |
| 18     | Cy Rn   | 29  | Cy Rn |
| 19     | Cy Rn   | 30  | Cy Rn |
| 20     | Cy Rn   | 31  | Cy Rn |
| 21     | Cy Rn   | 31  | Cy Rn |
| 22     | Cy Rn   | 31  | Cy Rn |
| 23     | Cy Rn   | 31  | Cy Rn |
| 24     | Cy Rn   | 31  | Cy Rn |
| 25     | Cy Rn   | 31  | Cy Rn |
| 26     | Cy Rn   | 31  | Cy Rn |
| 27     | Cy Rn   | 31  | Cy Rn |
| 28     | Cy Rn   | 31  | Cy Rn |
| 29     | Cy Rn   | 31  | Cy Rn |
| 30     | Cy Rn   | 31  | Cy Rn |
| 31     | Cy Rn   | 31  | Cy Rn |

| November | Morning | Noon | Night |
|----------|---------|------|-------|
|          |         |      |       |
| December | Morning | Noon | Night |
|          |         |      |       |
## Weather in Dublin, for the Year 1752

### May

| Evening | Wind | D | Morning | Noon | Evening | Wind | D | Morning | Noon |
|---------|------|---|---------|------|---------|------|---|---------|------|
| Fg      | E    | 1 | Rn      | 29   | Fr      | W    | 3 | Cy O    | 29   |
| 2       | ENE  | 2 | Fr O    | 29   | O       | 4    | 2 | Rn      | 29   |
| 2       | ENE  | 3 | Rn      | 29   | 18      | 5    | 4 | St Rn   | 29   |
| 3       | WNW  | 4 | Cy Rn   | 29   | 10      | 6    | 4 | Cy     | 29   |
| 3       | W    | 5 | Rn      | 29   | 4      | 7    | 4 | Cy Rn   | 29   |
| Cy      | Variab. | 6 | Cy Rn G | 29   | 8      | 8    | 4 | Cy Rn   | 29   |
| 10      | Ditto | 7 | Cy Rn G | 29   | 8      | 9    | 4 | Cy Rn   | 29   |
| 10      | G    | 8 | Cy Rn   | 29   | 9      | 10   | 4 | Cy Rn   | 29   |
| 8       | Cd W | 9 | Cy O    | 29   | 15     | 11   | 4 | Cy Rn   | 29   |
| 8       | St   | 10| Cy O    | 29   | 18     | 12   | 4 | Cy Rn   | 29   |
| 8       | SSt  | 11| Cy O    | 29   | 18     | 13   | 4 | Cy Rn   | 29   |
| 8       | SSE  | 12| Cy O    | 29   | 18     | 14   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 13| Cy O    | 29   | 18     | 15   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 14| Cy O    | 29   | 18     | 16   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 15| Cy O    | 29   | 18     | 17   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 16| Cy O    | 29   | 18     | 18   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 17| Cy O    | 29   | 18     | 19   | 4 | Cy Rn   | 29   |
| 10      | Wm   | 20| Cy O    | 29   | 18     | 20   | 4 | Cy Rn   | 29   |

### June

| Night | Wind | D | Morning | Noon | Night | Wind | D | Morning | Noon |
|-------|------|---|---------|------|-------|------|---|---------|------|
| 1     | Cy O | 1 | Rn      | 29   | 2     | Cy Rn | 29   |
| 2     | Rn   | 2 | 18      | 29   | 3     | Cy Rn | 29   |
| 2     | Rn   | 3 | 18      | 29   | 4     | Cy Rn | 29   |
| 2     | Rn   | 4 | 18      | 29   | 5     | Cy Rn | 29   |
| 2     | Rn   | 5 | 18      | 29   | 6     | Cy Rn | 29   |
| 2     | Rn   | 6 | 18      | 29   | 7     | Cy Rn | 29   |
| 2     | Rn   | 7 | 18      | 29   | 8     | Cy Rn | 29   |
| 2     | Rn   | 8 | 18      | 29   | 9     | Cy Rn | 29   |
| 2     | Rn   | 9 | 18      | 29   | 10    | Cy Rn | 29   |
| 2     | Rn   | 10| 18      | 29   | 11    | Cy Rn | 29   |
| 2     | Rn   | 11| 18      | 29   | 12    | Cy Rn | 29   |
| 2     | Rn   | 12| 18      | 29   | 13    | Cy Rn | 29   |
| 2     | Rn   | 13| 18      | 29   | 14    | Cy Rn | 29   |
| 2     | Rn   | 14| 18      | 29   | 15    | Cy Rn | 29   |
| 2     | Rn   | 15| 18      | 29   | 16    | Cy Rn | 29   |
| 2     | Rn   | 16| 18      | 29   | 17    | Cy Rn | 29   |
| 2     | Rn   | 17| 18      | 29   | 18    | Cy Rn | 29   |
| 2     | Rn   | 18| 18      | 29   | 19    | Cy Rn | 29   |
| 2     | Rn   | 19| 18      | 29   | 20    | Cy Rn | 29   |
| 2     | Rn   | 20| 18      | 29   | 21    | Cy Rn | 29   |
| 2     | Rn   | 21| 18      | 29   | 22    | Cy Rn | 29   |
| 2     | Rn   | 22| 18      | 29   | 23    | Cy Rn | 29   |
| 2     | Rn   | 23| 18      | 29   | 24    | Cy Rn | 29   |
| 2     | Rn   | 24| 18      | 29   | 25    | Cy Rn | 29   |
| 2     | Rn   | 25| 18      | 29   | 26    | Cy Rn | 29   |
| 2     | Rn   | 26| 18      | 29   | 27    | Cy Rn | 29   |
| 2     | Rn   | 27| 18      | 29   | 28    | Cy Rn | 29   |
| 2     | Rn   | 28| 18      | 29   | 29    | Cy Rn | 29   |
| 2     | Rn   | 29| 18      | 29   | 30    | Cy Rn | 29   |
| 2     | Rn   | 30| 18      | 29   | 31    | Cy Rn | 29   |

### September

| Night | Wind | D | Morning | Noon | Night | Wind | D | Morning | Noon |
|-------|------|---|---------|------|-------|------|---|---------|------|
| 1     | Cy Rn | 1 | Stile altered | 29   | 2     | Cy Rn | 29   |
| 2     | Cy Rn | 2 | Stile altered | 29   | 3     | Cy Rn | 29   |
| 3     | Cy Rn | 3 | Stile altered | 29   | 4     | Cy Rn | 29   |
| 4     | Cy Rn | 4 | Stile altered | 29   | 5     | Cy Rn | 29   |
| 5     | Cy Rn | 5 | Stile altered | 29   | 6     | Cy Rn | 29   |
| 6     | Cy Rn | 6 | Stile altered | 29   | 7     | Cy Rn | 29   |
| 7     | Cy Rn | 7 | Stile altered | 29   | 8     | Cy Rn | 29   |
| 8     | Cy Rn | 8 | Stile altered | 29   | 9     | Cy Rn | 29   |
| 9     | Cy Rn | 9 | Stile altered | 29   | 10    | Cy Rn | 29   |
| 10    | Cy Rn | 10| Stile altered | 29   | 11    | Cy Rn | 29   |
| 11    | Cy Rn | 11| Stile altered | 29   | 12    | Cy Rn | 29   |
| 12    | Cy Rn | 12| Stile altered | 29   | 13    | Cy Rn | 29   |
| 13    | Cy Rn | 13| Stile altered | 29   | 14    | Cy Rn | 29   |
| 14    | Cy Rn | 14| Stile altered | 29   | 15    | Cy Rn | 29   |
| 15    | Cy Rn | 15| Stile altered | 29   | 16    | Cy Rn | 29   |
| 16    | Cy Rn | 16| Stile altered | 29   | 17    | Cy Rn | 29   |
| 17    | Cy Rn | 17| Stile altered | 29   | 18    | Cy Rn | 29   |
| 18    | Cy Rn | 18| Stile altered | 29   | 19    | Cy Rn | 29   |
| 19    | Cy Rn | 19| Stile altered | 29   | 20    | Cy Rn | 29   |
| 20    | Cy Rn | 20| Stile altered | 29   | 21    | Cy Rn | 29   |
| 21    | Cy Rn | 21| Stile altered | 29   | 22    | Cy Rn | 29   |
| 22    | Cy Rn | 22| Stile altered | 29   | 23    | Cy Rn | 29   |
| 23    | Cy Rn | 23| Stile altered | 29   | 24    | Cy Rn | 29   |
| 24    | Cy Rn | 24| Stile altered | 29   | 25    | Cy Rn | 29   |
| 25    | Cy Rn | 25| Stile altered | 29   | 26    | Cy Rn | 29   |
| 26    | Cy Rn | 26| Stile altered | 29   | 27    | Cy Rn | 29   |
| 27    | Cy Rn | 27| Stile altered | 29   | 28    | Cy Rn | 29   |
| 28    | Cy Rn | 28| Stile altered | 29   | 29    | Cy Rn | 29   |
| 29    | Cy Rn | 29| Stile altered | 29   | 30    | Cy Rn | 29   |
| 30    | Cy Rn | 30| Stile altered | 29   | 31    | Cy Rn | 29   |

### January

| Night | Wind | D | Morning | Noon | Night | Wind | D | Morning | Noon |
|-------|------|---|---------|------|-------|------|---|---------|------|
| 1     | Cy Rn | 1 | Stile altered | 29   | 2     | Cy Rn | 29   |
| 2     | Cy Rn | 2 | Stile altered | 29   | 3     | Cy Rn | 29   |
| 3     | Cy Rn | 3 | Stile altered | 29   | 4     | Cy Rn | 29   |
| 4     | Cy Rn | 4 | Stile altered | 29   | 5     | Cy Rn | 29   |
| 5     | Cy Rn | 5 | Stile altered | 29   | 6     | Cy Rn | 29   |
| 6     | Cy Rn | 6 | Stile altered | 29   | 7     | Cy Rn | 29   |
| 7     | Cy Rn | 7 | Stile altered | 29   | 8     | Cy Rn | 29   |
| 8     | Cy Rn | 8 | Stile altered | 29   | 9     | Cy Rn | 29   |
| 9     | Cy Rn | 9 | Stile altered | 29   | 10    | Cy Rn | 29   |
| 10    | Cy Rn | 10| Stile altered | 29   | 11    | Cy Rn | 29   |
| 11    | Cy Rn | 11| Stile altered | 29   | 12    | Cy Rn | 29   |
| 12    | Cy Rn | 12| Stile altered | 29   | 13    | Cy Rn | 29   |
| 13    | Cy Rn | 13| Stile altered | 29   | 14    | Cy Rn | 29   |
| 14    | Cy Rn | 14| Stile altered | 29   | 15    | Cy Rn | 29   |
| 15    | Cy Rn | 15| Stile altered | 29   | 16    | Cy Rn | 29   |
| 16    | Cy Rn | 16| Stile altered | 29   | 17    | Cy Rn | 29   |
| 17    | Cy Rn | 17| Stile altered | 29   | 18    | Cy Rn | 29   |
| 18    | Cy Rn | 18| Stile altered | 29   | 19    | Cy Rn | 29   |
| 19    | Cy Rn | 19| Stile altered | 29   | 20    | Cy Rn | 29   |
| 20    | Cy Rn | 20| Stile altered | 29   | 21    | Cy Rn | 29   |
| 21    | Cy Rn | 21| Stile altered | 29   | 22    | Cy Rn | 29   |
| 22    | Cy Rn | 22| Stile altered | 29   | 23    | Cy Rn | 29   |
| 23    | Cy Rn | 23| Stile altered | 29   | 24    | Cy Rn | 29   |
| 24    | Cy Rn | 24| Stile altered | 29   | 25    | Cy Rn | 29   |
| 25    | Cy Rn | 25| Stile altered | 29   | 26    | Cy Rn | 29   |
| 26    | Cy Rn | 26| Stile altered | 29   | 27    | Cy Rn | 29   |
| 27    | Cy Rn | 27| Stile altered | 29   | 28    | Cy Rn | 29   |
| 28    | Cy Rn | 28| Stile altered | 29   | 29    | Cy Rn | 29   |
| 29    | Cy Rn | 29| Stile altered | 29   | 30    | Cy Rn | 29   |
| 30    | Cy Rn | 30| Stile altered | 29   | 31    | Cy Rn | 29   |
## June

| Noon | Evening | Wind |
|------|---------|------|
| 2    | Cy Rn   | SW   |
| 3    | Rn O    | SSE  |
| 11   | O       | Var. |
| 14   | Rn Th   | SW   |
| 17   | O Cy    | no wind |
|      | Fr Cd   | E    |
|      | Cy Rn Cd| SE   |
| 16   | Cy Wy   | SSE  |
| 15   | O Cy    | SSE  |
| 12   | Cy O    | NW   |
| 16   | O Wm    | SE   |
| 17   | O       | SE   |
| 16   | Rn      | SE   |
| 18   | Cy O    | SE   |
| 16   | Cy Rn   | SE   |
| 4    | Cy O    | W    |
| 2    | Rn Wy   | WSW  |
|      | Cy O    | S    |
| 7    | O Rn    | W    |
| 14   | O       | NNW  |
| 13   | Cy      | SSE  |
| 14   | O       | E    |
| 12½  | Cy O    | E    |
| 5    | Rn      | E    |
| 6    | Rn      | Ditto |
| 5    | Wy O    | SSW  |
| 7    | O Rn    | S    |
| 6    | Wy Rn   | SE   |
| 5    | Rn O    | SE   |
| 6    | Rn O    | SSW  |

## October

| Noon | Night | Wind |
|------|-------|------|
| 2    | Fr Cd | ESE  |
| 4    | Fr Cd | E    |
| 3    | Cy Cd | Var. |
| 1    | Cy Cd | Var. |
| 17½ | RnWm  | Var. |
| 16½ | RnWm  | Var. |
| 10   | RnCyWm| SE   |
| 11   | Rn    | SSE  |
| 11   | Cy Wm | SE   |
| 7    | Rn St | SE   |
| 6    | Cy St | ESE  |
| 15   | Fr    | WNW  |
| 17½ | Cy Rn | Var. |
| 18   | Fg Cd | WNW  |
| 1    | Fr Cd | Var. |
| 18   | Cy    | SW   |
| 18   | Cy Rn | Var. |
| 3    | RnCyWm| WNW  |
| 2    | Cy Fg | Var. |
| 2    | Fr Fg | Var. |
| 19½ | Cy Fg | Var. |
| 19   | Fr Fg | SSE  |
| 18   | Fr Fg | Var. |
| 1    | Fr Fg | SSE  |
| 1    | Fr Fg | SSE  |
| 1    | Fr Fg | SSE  |
| 1    | Cy    | SW   |

## February

| Noon | Night | Wind |
|------|-------|------|
|      |       |      |
| November | Morning | Noon | Night | Wind |
|----------|---------|------|-------|------|
| 1        | Cy Rn   | 29   | Fr    | WSW  |
| 2        | O Rn    | 30   | Cd Ft | NW   |
| 3        | Cd      | 30   | Fg Fr | W    |
| 4        | Cy Wy St| 29   | Rn Wy | WSW  |
| 5        | Rn      | 29   | Rn Fr | WSW  |
| 6        | Fg      | 29   | Cy    | Var. |
| 7        | Cy Wy O | 29   | Cy    | WSW  |
| 8        | Cy Wy Rn| 28   | St Rn | SSE  |
| 9        | Cy O Rn | 28   | Rn Sw | WyRnC |
| 10       | Sw Rn C | 29   | Rn Ft | Var. |
| 11       | Ft Cd   | 29   | Cd Cy | WSW  |
| 12       | Fr O    | 29   | Fr    | WSW  |
| 13       | Fr O    | 29   | Rn Wm | SSW  |
| 14       | Cy O    | 30   | Fr    | W    |
| 15       | Fr O    | 30   | Fr    | WSW  |
| 16       | Fr O    | 30   | Fr    | WNW  |
| 17       | Fr O    | 30   | Fr    | Var. |
| 18       | Fr O    | 30   | Cy    | E    |
| 19       | Cy Fg O | 29   | Cy Cd | Fg Cd|
| 20       | Cy O    | 29   | Fr Cd | Fg Cd|
| 21       | Fr O    | 29   | Fr Wy | Wy Cd|
| 22       | Rn Tt   | 29   | Rn Wy | Wy Cd|
| 23       | Fr Cd   | 29   | Cd Rn | WyRnC|
| 24       | Rn Wy   | 29   | Rn Cy | Rn Wy|
| 25       | Fr Cd   | 29   | Cd    | Fr Cd|
| 26       | Fr O    | 30   | Fr    | W    |
| 27       | Fg O    | 30   | Fr    | W    |
| 28       | Fr Cy   | 30   | Rn Cy | Rn    |
| 29       | Fr Cy   | 30   | Fr Cy | E    |
| 30       | Fr Cy   | 30   | Fr Cy | E    |

| December | Morning | Noon | Night | Wind |
|----------|---------|------|-------|------|
| 1        | Fr      | 30   | Fr    | Fr   |
| 2        | Fr Fg   | 30   | Fr Fg | Fr   |
| 3        | Fg Cd   | 30   | Fr Cd | Fr   |
| 4        | Fg Cd   | 30   | Fr Cd | Fr   |
| 5        | Fr Cd   | 30   | Fr Cd | Fr   |
| 6        | Fr Cd   | 30   | Fr Cd | Fr   |
| 7        | Fr Cd   | 30   | Fr Cd | Fr   |
| 8        | Fr Cd   | 30   | Fr Cd | Fr   |
| 9        | Fr Cd   | 30   | Fr Cd | Fr   |
| 10       | Fr Cd   | 30   | Fr Cd | Fr   |
| 11       | Fr Cd   | 30   | Fr Cd | Fr   |
| 12       | Fr Cd   | 30   | Fr Cd | Fr   |
| 13       | Fr Cd   | 30   | Fr Cd | Fr   |
| 14       | Fr Cd   | 30   | Fr Cd | Fr   |
| 15       | Fr Cd   | 30   | Fr Cd | Fr   |
| 16       | Fr Cd   | 30   | Fr Cd | Fr   |
| 17       | Fr Cd   | 30   | Fr Cd | Fr   |
| 18       | Fr Cd   | 30   | Fr Cd | Fr   |
| 19       | Fr Cd   | 30   | Fr Cd | Fr   |
| 20       | Fr Cd   | 30   | Fr Cd | Fr   |
| 21       | Fr Cd   | 30   | Fr Cd | Fr   |
| 22       | Fr Cd   | 30   | Fr Cd | Fr   |
| 23       | Fr Cd   | 30   | Fr Cd | Fr   |
| 24       | Fr Cd   | 30   | Fr Cd | Fr   |
| 25       | Fr Cd   | 30   | Fr Cd | Fr   |
| 26       | Fr Cd   | 30   | Fr Cd | Fr   |
| 27       | Fr Cd   | 30   | Fr Cd | Fr   |
| 28       | Fr Cd   | 30   | Fr Cd | Fr   |
| 29       | Fr Cd   | 30   | Fr Cd | Fr   |
| 30       | Fr Cd   | 30   | Fr Cd | Fr   |

Explanation.—Sunshine ⊙ | Fair Fr | Cold Cd | Frost Ft | Cloudy Cy | Warm Wm | Hot Ht | Wincy Wy | Storm

The height of the Mercury generally taken at 6 o'clock in the morning.

Place this after Page 221.
| Night | Wind. | D° | Morning | Noon | Night | Wind. | D° | Morning | Noon |
|-------|------|----|---------|------|-------|------|----|---------|------|
| 10    | Fr Fg | NNW | 130 | 4 | Fg | 30 | 3 | Fg Rn | 30 | 1½ | Rn | Var. | 1 | 29 | 7 | Fr Wy | 29 | 19 | O |
| 10    | Fr Fg Cd | W | 2 | 29 | 19 | Cy Rn | 29 | 17 | Rn | 29 | 15 | Rn | ENE | 2 | 29 | 7 | Wy Fr | 29 | 13½ | O |
| 6     | Fg Cd | WNW | 3 | 29 | 14 | Cy Rn G | 29 | 12 | Sw Rn G | 29 | 11½ | Rn Sw G | ENE | 3 | 30 | 2 | Fr O | 30 | 3 | O |
| 7     | Fg Cd | WNW | 4 | 29 | 13 | Cy Rn | 29 | 15 | Cy Rn | 29 | 17½ | Fg | Var. | 4 | 30 | 3 | Ft | 30 | 3 | Th |
| 6     | Fg Cd | Var. | 5 | 29 | 19½ | Cy Fg | 29 | 19 | Fg | 29 | 19 | Fg Ft | E | 5 | 30 | 2 | Fr O | 30 | 1 | O |
| 1     | Fr Fg | WNW | 6 | 29 | 17 | Fr O Ft | 29 | 17 | Cy Ft | 29 | 17 | Fg Ft | SE | 6 | 29 | 17 | Ft Sw O | 29 | 16 | Sw |
| 1     | Fr Fg | WNW | 7 | 29 | 18 | Fg | 29 | 17½ | Fg | 29 | 18 | Fg | NW | 7 | 29 | 13 | Sw | 29 | 12 | Sw |
| 19    | Fr Fg | W | 8 | 29 | 17 | Fg | 29 | 16 | Cy | 29 | 14 | Cy | WNW | 8 | 29 | 12 | Fr | 29 | 12 | Fr |
| 12    | Cy Rn | Var. | 9 | 29 | 13 | Cy O | 29 | 11½ | O Cy | 29 | 7 | Rn | 28 | 12 | Rn Wy | Var. | 10 | 29 | 14½ | Cy O | 29 | 14 | O |
|       | Rn | Var. | 10 | 28 | 19 | Rn | 28 | 16 | Rn | 28 | 12 | Rn Wy | Var. | 10 | 29 | 14½ | Cy O | 29 | 14 | O |
| 1     | Fr | Var. | 11 | 28 | 14 | Wy O Cd | 28 | 18 | O Cd | 29 | 2 | Fr Cd | WSW | 11 | 29 | 11½ | G Rn Sw | 29 | 10½ | Sw |
| 19    | Rn Fr | WSW | 12 | 29 | 5½ | Rn | 29 | 2½ | Rn Wy | 28 | 16 | Rn G St | SE | 12 | 29 | 7 | Sw Rn | 29 | 5 | Sw |
| 3     | Rn | WNW | 13 | 28 | 10½ | Fg Rn | 28 | 18 | Rn Wy | 29 | 2½ | Rn St | WNW | 13 | 29 | 1 | Rn | 28 | 19 | Rn |
| 5     | Wy Fr | W | 14 | 29 | 8½ | Fr O | 29 | 9½ | Fr O | 29 | 12 | Ft | Ditto | 14 | 28 | 9 | Cy Wy | 28 | 12 | O |
| 6     | Fr Fg | W | 15 | 29 | 15 | Fr O | 29 | 10 | Fr O | 29 | 17 | Fr Cd | Ditto | 15 | 28 | 19 | Fr O | 29 | 2 | O |
| 14    | Fr Ft | WNW | 16 | 29 | 14 | Fr | 29 | 11½ | Fr | 29 | 9½ | Rn | S | 16 | 28 | 17 | Rn St | 28 | 16 | O |
| 10    | Fr Cd | W | 17 | 29 | 12 | Rn Cy | 29 | 14½ | Rn | 29 | 17 | Fr | NW | 17 | 28 | Fr O | 28 | 18 | Cy |
| 2     | Rn Sw St | W | 18 | 29 | 16 | Fr Cd | 29 | 14 | Cy Cd | 29 | 12½ | Fg Cd | NW | 18 | 28 | 14½ | O | 28 | 14 | O |
| 5     | St Cd Rn | WSW | 19 | 29 | 12 | Cy Rn | 29 | 13 | Sw Cd | 29 | 16 | Fg Ft | Var. | 19 | 29 | 2 | O | 29 | 29 | O |
| 2     | St Cd | WSW | 20 | 29 | 18 | Fr Ft | 29 | 18½ | Ft Fg | 22 | 17½ | Fg Ft | WNW | 20 | 28 | 16 | O | 28 | 15 | Rn |
| 6     | Ft Fg | W | 21 | 29 | 15 | Rn Fr | 29 | 16½ | O | 29 | 18 | Fr Ft | Ditto | 21 | 29 | 9 | O | 29 | 14 | O |
| 11    | Fg Ft | W | 22 | 29 | 18 | Fg Fr | 29 | 18 | Fr | 29 | 18½ | Fg Ft | Var. | 22 | 29 | 15 | Cy Rn | 29 | 12 | Rn |
| 1     | Rn Wy | WNW | 23 | 29 | 19½ | Fg Fr | 29 | 19½ | Fr | 29 | 19½ | Fg Ft | S | 23 | 29 | 5 | O | 29 | 17 | O |
| 2½    | Rn Cy Ft | W | 24 | 29 | 16½ | Cy Wy | 29 | 16 | Cy Wy | 29 | 16 | Rn Wy | SE gale | 24 | 30 | O | 29 | 18 | O |
| 16    | Fr Fg | ENE | 25 | 29 | 14½ | Cy Wy | 29 | 13½ | Rn | 29 | 14½ | Rn Wm | SW | 25 | 29 | 17 | O | 30 | 1 | O |
| 2½    | Cy Tt | W | 26 | 29 | 18 | Fr O | 29 | 18 | O | 29 | 16½ | Fr Cd | Ditto | 26 | 30 | 6 | O | 30 | 6½ | O |
| 1     | Fr Ft | NW | 27 | 29 | 14 | Cy Rn | 29 | 11½ | Cy Rn | 29 | 11 | Cy | Ditto | 27 | 30 | 6 | O | 30 | 5 | O |
| 1½    | Fr Ft | NNW | 28 | 29 | 11 | Cy O | 29 | 12 | Cy Cd | 29 | 12½ | Fr Cd | SSE | 28 | 30 | 3 | Cy O | 30 | 3 | O |
| 2     | Fg Ft | NNW | 29 | 29 | 10 | Cy Rn | 29 | 8½ | Rn Cy | 29 | 7 | Wy | SW | 29 | 4 | Rn St | Ditto |
| 1     | Fg Ft | WNW | 30 | 29 | 5½ | Cy O | 29 | 5 | O Cy | 29 | 4 | Rn O | 29 | 4 | Fr Wy | WSW |

* Stormy St | Tempetuous Tt | snow Sw | Hail G | Thunder Th | Lightning Lg | Rain Rn | Fog Fg | Thaw Thg | Damp D

morning, at 2 in the afternoon, and at 9 at night; and the changes of the weather, at different times of the day.
| Noon | Night | Wind |
|------|-------|------|
| 19   | Wy    | St   | WSW |
| 13½  | Wy    | Fr Ft| NNW |
| 3    | Ft    | Fg Ft| WNW |
| 3    | Thg Rn| Cd Fr| S   |
| 1    |       | Ft Sw| SE  |
| 16   | Sw O  | Sw   | NNE |
| 12   | Sw    | Rn   | N   |
| 12   | Fr    | Fr   | SE  |
| 14   |       | Fg   | E   |
| 14   |       | Fg Cd| WNW |
| 10½  | Sw Rn | Cy Sw| ENE |
| 5    | Sw G  | Sw   | E   |
| 19   | Rn    | Rn Wy| Var.|
| 12   |       | Fr Wy| W   |
| 2    | Cd    | Fr   | Var.|
| 16   | St Rn | Fr Wy| SW  |
| 18   | Cy Rn | Rn Cy| WSW |
| 14   | Rn G  | Fr   | W   |
| 15   | Cy    | Rn   | E   |
| 15   | Rn St | Rn St| SW  |
| 14   |       | Rn Fr| WNW |
| 12   | Rn    | Cy   | SE  |
| 17   |       | Fr   | WNW |
| 18   |       | Fr Wy| Var.|
| 1    | Cd    | Fr Fg| Var.|
| 6½   |       | Fr Cd| E   |
| 5    |       | Fr Ft| E   |
| 3    |       | Fr Cd| E   |

Damp Dp l

James Simon.
usual wooden cover, to prevent any dust from falling into the quicksilver. In such a tube the friction is much less; and I can observe the most sudden change in the weather, even to an 80 part of an inch; tho' in my journal I only set down a 40 part. For example, March 12, 1752, at night, $29 \frac{1}{4}$, is 29 inches $\frac{1}{4}$ twentieth parts and a half of an inch, or $\frac{3}{4}$ parts. I am,

Dear Sir,

Your most humble servant,

James Simon.

$^*$ A TABLE.