198 ——— Prussic Acid. 
oe ee ee ae 
& vi A useful little volume has bos, published in New- 
Haven,* containing a transcript of Dr. Magendie’s memoirs 
on the prussic ecid, with prefatory remarks by the trans- 
lator, Dr. J. G. Percival, with some additional cases of t 
use of the acid, and an appendix by Dr. Alfred S. Monson. 
It will afford much useful information to those who wish to 
em ie oy this acid. 
_ The he following i is Dr. Monson’s process for preparing dhe 
Fis oar into a glass retort, eighteen fluid ounces of a satu- 
rated solution of prussiate of mercury, at the temperature 
of 65° of Fahrenheit ; add to it two ounces and an half of 
iron filings; pour upon these, two ounces by weight, of 
strong sulphurie acid, and distil off two fluid ounces into a 
receiver containing one fluid ounce of distilled water. ‘The 
receiver must be surrounded with ice, and covered with « a 
eloth to render it dari 
rity yineh to one i a 
Several proportions. — From 
hese experiments it results, that where the materi ale st 
ee By Howe & Spalding, and A. 7. Maltby & Co. 
