22 ILLUSTRATIONS 



FIG. PAGE 



374. Method of tying head of a small screw into rubber membrane . 4X4 



375. Some of the more common types of gas pipe fittings 4sii 



376. Small electric heater 4*7 



377. Method of preparing two pieces of brass tubing for making 



a tracheal cannula 4iMi 



378. Method of making "straight" glass r-annulas 4 Hi' 



379. Same as Fig. 378 ... I '.'I' 



380. Same as Fig. 378 4 Hi' 



381. Same as Fig. 378 4<)4 



382. Same as Fig. 378 4H4 



383. Process for making frog clips 4!>5 



384. Method for making very small brass cannulas 490 



385. Large stand with. L-shaped base . 4!>7 



386. Method of arranging the camera and arc light for copying . . 501 



387. Method of suspending an adjustable arc light above the operating- 



table ">- 



388. Measuring glass ">'' | 4 



389. Adjustable frame for cutting lantern slide mats 50 7 



.390. Frame for making blue prints ->H 



