INJECTION OF ALCOHOL INTO THS ARTERIES. 119 



§ 283. (3) Injection of 52-67 per cent. Alcohol into the Stomach, 

 Intestine, and Inmgs.—ll the left hypochondrium is prominent, or 

 if it is known that there is much food in the stomach, the entire 

 abdomen should be compressed, so as, if possible, to expel the con- 

 tents through the mouth. Pressure of the abdomen just cephalad 

 of the pubes will probably expel part of the contents of the large 

 intestine, and most of the rest may be washed out with water intro- 

 duced from a syringe or from a faucet. Alcohol should then be 

 injected into the. abdomen, as directed in § 282, or the cavity may 

 be opened, as dkected in § 280. In the latter case, both the stomach 

 and small intestine may be filled from the duodenum. In the 

 former, alcohol may be injected into the large intestine through the 

 anus, and into the stomach from the mouth. The anus should be 

 plugged with cotton to retain the alcohol ; if the stomach is filled 

 only moderately, the alcohol wiU probably be retained by it. The 

 lungs may be filled in either of the two ways mentioned in § 281. 



Of course, neither of the three measures above described is 

 of direct service in preserving the membral muscles or the brain. 

 These parts are immediately reached by the alcohol only according 

 to the fourth method, which is efficacious for all parts, but somewhat 

 more complicated than the other methods. 



§ 284. (4) Injection of Alcohol into the Arteries. — This should 

 be done in all cases when practicable, or unless there are special 

 objections. With entire animals, or the cephalic or caudal halves, 

 there is no practical difficulty ; with smaller portions, as the head 

 or a single limb, it may be necessary to tie or secure with compress- 

 ors other vessels than the one injected, so as to prevent the escape 

 of alcohol ; but in some cases even this may be omitted, the injec- 

 tion being done in a dish, so that the escaping alcohol is saved. 



The following directions apply particularly to the cat : — 



If the entire animal is to be preserved, provide at least 2 liters 

 of 84-95 per cent, alcohol and a syringe and canula of appropriate 

 size. After bleeding (§ 279), close the vein by a ligature both cen- 

 trad and peripherad of the point of division, and have ready a small 

 compressor for application to the artery. Inject the alcohol into 

 the A. femoralis, as directed for plaster (see Chap. III.). 



Inject the alcohol slowly, so as to give it time for penetrating, 

 the smaller vessels, and stop as soon as the resistance is decidedly 

 increased, lest the vessels be ruptured. This last precaution is 

 indispensable if a plaster or gelatin injection is to be made afterward. 



