TABLES — 4th ed. (1810)

TABLES, exhibiting a collective View of all the Frigorific Mixtures contained in Mr Walker's Publication, 1808.

TABLE I.—This Table consists of Frigorific Mixtures, having the power of generating or creating cold, without the aid of ice, sufficient for all useful and philosophical purposes, in any part of the world, at any season.

Mixtures.		Thermometer sinks.	Degrs. of cold produced.
Muriate of ammonia	5 parts	From $+50^{\circ}$ to $+10^{\circ}$ .	40
Nitrate of potash	5
Water	16
Muriate of ammonia	5 parts	From $+50^{\circ}$ to $+4^{\circ}$ .	46
Nitrate of potash	5
Sulphate of soda	8
Water	16
Nitrate of ammonia	1 part	From $+50^{\circ}$ to $+4^{\circ}$ .	46
Water	1	From $+50^{\circ}$ to $+4^{\circ}$ .	46
Nitrate of ammonia	1 part	From $+50^{\circ}$ to $-7^{\circ}$ .	57
Carbonate of soda	1
Water	1
Sulphate of soda	3 parts	From $+50^{\circ}$ to $-3^{\circ}$ .	53
Diluted nitric acid	2	From $+50^{\circ}$ to $-3^{\circ}$ .	53
Sulphate of soda	6 parts	From $+50^{\circ}$ to $-10^{\circ}$ .	60
Muriate of ammonia	4
Nitrate of potash	2
Diluted nitric acid	4
Sulphate of soda	6 parts	From $+50^{\circ}$ to $-14^{\circ}$ .	64
Nitrate of ammonia	5
Diluted nitric acid	4
Phosphate of soda	9 parts	From $+50^{\circ}$ to $-12^{\circ}$ .	62
Diluted nitric acid	4	From $+50^{\circ}$ to $-12^{\circ}$ .	62
Phosphate of soda	9 parts	From $+50^{\circ}$ to $-21^{\circ}$ .	71
Nitrate of ammonia	6
Diluted nitric acid	4
Sulphate of soda	8 parts	From $+50^{\circ}$ to $0^{\circ}$ .	50
Muriatic acid	5	From $+50^{\circ}$ to $0^{\circ}$ .	50
Sulphate of soda	5 parts	From $+50^{\circ}$ to $+3^{\circ}$ .	47
Diluted sulphuric acid	4	From $+50^{\circ}$ to $+3^{\circ}$ .	47

N. B. If the materials are mixed at a warmer temperature, than that expressed in the table, the effect will be proportionably greater; thus, if the most powerful of these mixtures be made, when the air is $+85^{\circ}$ , it will sink the thermometer to $+2^{\circ}$ .

TABLE II.

TABLE II.—This Table consists of Frigorific Mixtures, composed of ice, with chemical salts and acids.

Mixtures.	Thermometer finks.	Degr. of cold produced.
Snow, or pounded ice 2 parts Muriate of soda 1	From any Temperature to $-50^{\circ}$	*
Snow, or pounded ice 5 parts Muriate of soda 2 Muriate of ammonia 1		to $-12^{\circ}$	*
Snow, or pounded ice 24 parts Muriate of soda 10 Muriate of ammonia 5 Nitrate of potash 5		to $-18^{\circ}$	*
Snow, or pounded ice 12 parts Muriate of soda 5 Nitrate of ammonia 5		to $-25^{\circ}$	*
Snow - - - 3 parts Diluted sulphuric acid 2	From $+32^{\circ}$ to $-23^{\circ}$	55
Snow - - - 8 parts Muriatic acid 5 parts	From $+32^{\circ}$ to $-27^{\circ}$	59
Snow - - - 7 parts Diluted nitric acid 4	From $+32^{\circ}$ to $-30^{\circ}$	62
Snow - - - 4 parts Muriate of lime 5	From $+32^{\circ}$ to $-40^{\circ}$	72
Snow - - - 2 parts Chrysl. muriate of lime 3	From $+32^{\circ}$ to $-50^{\circ}$	82
Snow - - - 3 parts Potash 4	From $+32^{\circ}$ to $-51^{\circ}$	83

N. B. The reason for the omissions in the last column of this table, is, the thermometer sinking in these mixtures to the degree mentioned in the preceding column, and never lower, whatever may be the temperature of the materials at mixing.

TABLE III.

TABLE III.—This Table consists of Frigorific Mixtures selected from the foregoing tables, and combined, to as to increase or extend cold to the extremest degrees.

Mixtures.		Thermometer links.	Degr. of cold produced.
Phosphate of soda	5 parts	From 0° to —34°	34
Nitrate of ammonia	3
Diluted nitric acid	4
Phosphate of soda	3 parts	From —34° to —50°	16
Nitrate of ammonia	2
Diluted mixed acids	4
Snow	3 parts	From 0° to —46°	46
Diluted nitric acid	2	From 0° to —46°	46
Snow	8 parts	From —10° to —56°	46
Diluted sulphuric acid	3
Diluted nitric acid	3
Snow	1 part	From —20° to —60°	40
Diluted sulphuric acid	1	From —20° to —60°	40
Snow	3 parts	From +20° to —48°	68
Muriate of lime	4	From +20° to —48°	68
Snow	3 parts	From +10° to —54°	64
Muriate of lime	4	From +10° to —54°	64
Snow	2 parts	From —15° to —68°	53
Muriate of lime	3	From —15° to —68°	53
Snow	1 part	From 0° to —66°	66
Chrysl. muriate of lime	2	From 0° to —66°	66
Snow	1 part	From —40° to —73°	33
Chrysl. muriate of lime	3 parts	From —40° to —73°	33
Snow	8 parts	From —68° to —91°	23
Diluted sulphuric acid	10	From —68° to —91°	23

N. B. The materials in the first column are to be cooled, previously to mixing, to the temperature required, by mixtures taken from either of the preceding tables.