JO New Implement called a Cultivator. 



months ago, to C. Vauquelin a ilafk containing a liquor 

 obtained by the dittiilation of vinegar on a large Tcale. As- 

 C. Pontier was not ignorant that the firit product of the di- 

 ftiilation of the acetous acid is aqueous, he feparated it from 

 that which followed. After uniting feveral phlegms of the 

 fame kind, he was much aftonifhed to find that thefe phlegms 

 had a very agreeable aromatic odour t having dilcovered, by 

 preliminary trials, the properties which gave this product a 

 iimilarity to ethereal liquors, he rectified all the fuppofed 

 phlegms, and by thefe means obtained a peculiar ether, 

 which Vauquelin found to be acetic ether completely rec- 

 tified. 



From an identity fo ftriking in the experiments above de- 

 fcribed, it is evident that there exifts no difference between 

 the conftituent parts of the acetic and acetous acids ; that the 

 water, and mucilaginous or extractive matter, are the only 

 two apparent differences obferved in thefe two acids ; and, 

 confequently, that there exiils only one acid of vinegar, 

 which being at its maximum of oxygenation, ought, ac- 

 cording to the chemical nomenclature, to be diftinguifhed by 

 the name of acetic acid. In future, therefore, there will not 

 exift two different kinds of falts, either by the combination 

 of diitilled vinegar or of radical vinegar ; they will hereafter 

 be fo many products, the names of which mud be the fame ; 

 and hence acetates will exift, and not acetites. 



IV. Defcription of a nezu Implement called a Cultivator, By 

 Mr. William Lester, of Northampton*, 



A: 



SIR, 



S the health and luxuriance of corn depend, in a great 

 meafure, on the pulverization of the foil previous to the feed 

 being fown, the Society of Arts will, I am perfuaded, give 

 every encouragement in their power to the introduction of 

 any implement that promifes an abridgement of labour ; and 

 as all tenacious foils are pulverized in the heft manner in c\rv 

 weather, when their particles are the moft disjointed, and 

 their contact broken, the propriety of taking the advantage 

 of working them in that (late will be obvious : and at the 

 fame time it follows, that an improved implement for the 

 abridgement of labour would be a delirable thing in a climate 

 like England, where the feafons are fo uncertain. 



* From the Tranfael/'ons of the Society for the Encouragement of Arts* 

 &c. vol- xix. — The Society's lilver medal was .awarded to Mr. JLe'lcr 

 for this invention. 



Q In 



