TRANSACTIONS OF THE SECTIONS. 



571 



performed, together with a drawing of the pyrometer, in order 

 that it may be the more easy to judge of what reliance may be 

 put in the accuracy of the results. 



II. CHEMISTRY.— MINERALOGY. 



Table of the Proportiotis of anhydrous acid in acetic acid of 

 every degree of concentration between pure water and the 

 hydrated acetic acid, compared with the specific gravities, 

 water at 59° Fahr. being taken at unity. Founded on Ex- 

 periments, by Adam van der Toorn, 



