-SCIENTIFIC NEW«. 221 



Since his work a memoir on the gelatine of bones has been By Cadet dc 

 publiflied at Paris by Cadet de Vaux, extracts from which Vaux * 

 have been circulated through France by order of the minifter 

 of the interior, in which this method of making a wholefome 

 ■and pleafant food is ftrongly recommended. His experiments 

 are faid to have afforded remits nearly fimilar to thofe of 

 Prouft, but on being repeated by Dr. Young feem to have 

 completely failed* His experiment which is inferted in the 

 fifteenth number of the Journals of the Royal Inftitution, is 

 as follows: 



Three quarters of a pound of bones were taken from a Dr * Young** 

 piece of beef which had been roafted; they were principally expen 

 the vertebral and fpinal proceffes; they were reduced to a 

 fmooth pafte, by pounding them for twenty minutes, with 

 a little water, in a large mortar. They were kept on the 

 fire in an earthern pipkin, fimmering or flowly boiling, for 

 forty hours, with the addition of proper vegetables, fo as to 

 make a quart of broth. The broth (hewed no tendency to 

 jelly when cold ; it tafted only of the vegetables, and had 

 neither the appearance, nor the flavour of a highly nutricious 

 fubftance : there was nothing difagreeable in it except its in- 

 iipidity, but a few ounces of meat would probably have made 

 a better foup. 



Method of preparing Muriatic Ether withfimple Acid; by munat^c'ecber 

 M. Boss a, Apothecary at Hameln*. by Bajfe. 



MELT marine fait in a crucible and keep it in fufion an 

 hour, or til! the whole of the water of cryftalization is dif- 

 iipated. Put twenty ounces of this fait into a tubulated retort., 

 adapt a curved tube to it, and plunge the tube to the bottom 

 of a bottle with two necks, into which have been poured ten 

 ounces of alcohol, marking 100 on Richter's alcoholimeter. 

 (This alcohol muft be prepared by mixing three parts of highly 

 rectified fpirit of wine with one part of potafh, melted and 

 pulverized whilfr. hot, and diftilling it in a retort till it be 

 diminifhed one half.) When the whole is well luted, pour 

 into the retort, in quantities of half a penny weight at a time, 



* From Scherer's Journal de Chemie. 



ten 



