ERRATA FOR VOL. XVI. 



Page 53, line 18 from top, {or principal read principle. 

 " 59, " 10 from bottom, do. do. 



" 94, " 19 from top, for light read slight. 

 " 218, " 10 from top, for give read gave. 



, ADDITION. 



In Dr. Hare's process for weighing gases, page 294, line 20, after gas, read. 

 If the gas be heavier than air, we must add the weight, necessary to restore 

 the equilibrium to 30.5 grains ; and the sum will be the weight of one hun- 

 dred cubic inches of the gas. 



The editor wishes it to be understood, that the genuineness of Mr. Carpen- 

 ter's imitation of the Saratoga waters, rests exclusively upon his own authori- 

 ty, no examination of the powders having been made here. 



