By Pror. EMERSON REYNoLDs, M.D. 35 
cut, Fig. 1), and F the small gas holder from which water is ex- 
pelled by the nitrogen entering from A, 

Fia. 1. 
Gas generating vessel—This is an ordinary two-ounce wide- 
mouthed bottle, fitted with a good india-rubber cork, pierced 
with three holes. Through one of these holes the gas delivery 
tube E passes, and through another the small piece of bent glass, 
tube C. The heat afforded by a spirit lamp suffices for bending 
these tubes from straight pieces, and for the conversion of an 
ordinary bulb pipette capable of holding rather more than one 
fluid ounce into a vessel of the form B. 
The delivery tube of the pipette is first passed through the 
remaining hole in the cork, and the end of the tube then drawn 
out and recurved, as shown at c; the tube above 6 is bent so far 
down as to admit of its being connected by means of an india- 
rubber tube with the outer extremity of C. At D the india-rubber 
tube is securely clipped by a small artery forceps with broad jaws. 
When the cork carrying the tubes just described is secured in 
VOL. I.—PART I. D2 
