266 



EXPERIMENTAL PHARMACOLOGY 



(one per cent) and adrenaline. (Poor samples of coniine 

 are frequently obtained.) Isolate and ligate loosely .both 

 vago-sympathetic nerves. 



Consult Figs. 237, 238, 239, and 240, and dissect out Wliar- 

 ton's duct. Place a cannula (very small) in the duct and 

 fasten it with a ligature (thread). Dissect out the chorda 

 tympani nerve and when you can see it clearly lying across 

 the tip of the sublingual gland then place the ends of the 



Fig. 237. A dissection showing the position and extent of the first incision for ex- 

 posing the chorda tympani nerve and the ducts from the submaxillary and sublingual 

 glands. 



electrodes on the nerve and stimulate it. Do you get a nor- 

 mal result? If not why did you fail? (Dissect out the op- 

 posite duct and nerve if necessary.) Consult Fig. 231 for 

 the general distribution of nerves to the gland. Are any 

 other glands thus innervated? If so what ones? 



Open the abdomen and place an oncometer on a kidney 

 (left), spleen or an intestinal loop. Close the abdomen with 

 hemostats and arrange all writing points in the following 



