52 THE AMERICAN MONTHLY [Feb. 



sloping- bottom, wliose lowest, perforated point is on a 

 level with the ni)per border of the pan; into this opening 

 is fastened a tube, which fits accurately outside that 

 described in the boiling pan and whicli is of the same 

 length; at the juncture of the steam chaml»crand its slop- 

 ing bottom is placed a diaphragm of galvanized iron; l)e- 

 tween this and the opening beneath is a small square tin 

 plate; the chamber rests upon four legs, is provided with 



handles and a sloping cover, perforated at the top under- 

 neath a liandle. 



Directions for iist. — The boiling pan is filled with a 

 sufficient quantity of water, care being taken to fill the 

 groove at the same time; the hood is adjusted, and the 

 whole placed over any good fire. While the water is 

 heating, the instruments are arranged on the tray, and 

 tiie dressing, etc., (previously washed) in the steam cham- 

 ber; needles, drainage tubes, ligating and suturing 



materials are put separately in a small metal box (sterile 

 catgut is brougiit along in hermetically sealed envelopes). 

 When the water boils, the hood is removed, the steam 

 chamber put in, whereupon the hood is replaced witli a 

 cork in the up[)er tube. The steam will now ascend be- 

 tween the hood and the steam chamber to the top; the 

 cork at tlie top and tlin water in thf groove and in the 



