from αντι, and στερεός, patrid, of στερεός, I putrefy, an appellation given to such substances as resist putrefaction. We have some curious experiments in relation to antiseptic substances by Dr Pringle, who has ascertained their several virtues. Thus, in order to settle the antiseptic virtue of salts, he compared it with that of common sea-salt, which being one of the weakest, he supposes equal to unity, and expresses the proportional strength of the rest by the higher numbers, as in the following table.

| Salts, their antiseptic virtue. | |--------------------------------| | Sea salt......................1 | | Sal gemma.....................1+ | | Tartar vitriolated............2 | | Spiritus Mindereri............2 | | Tartarus solubilis...........2 | | Sal diureticus...............2+ | | Crude sal ammoniacae........3 |

In this table the proportions are marked in integral numbers; only to some there is added the sign +, to show that those salts are possessed of a stronger antiseptic virtue than the number in the table expresses, by some fractions; unless in the three last, where the same sign imports that the salt may be stronger by some units.