NUTGALL 563 



ties hasten its excretion by stimulation of the muscular coat 

 of the gall bladder (except in the horse) and small intes- 

 tines. It is probable that the intestinal secretions are 

 somewhat augmented. The faecal movements, after medi- 

 cinal doses of podophyllin, are liquid, often stained with bile, 

 and may be accompanied by some nausea and griping. 

 Since podophyllin is an uncertain purgative, affecting differ- 

 ent patients unequally, it should be combined with other 

 agents when a purgative action is desired ; preferably calo- 

 mel and aloes. The time required for the action of these 

 drugs is nearly the same as that necessary for podophyllin. 

 Aloes increases biliary secretion, while calomel is an indirect 

 chologogue in sweeping bile out of the small intestines and 

 preventing its reabsorption. 



Administration. — Podophyllin should be given to dogs 

 in pills ; to horses in ball with calomel and aloes, if purga- 

 tion is desired ; or dissolved in liquor potassse and diluted 

 with water. 



Uses. — Podophyllin is particularly indicated as a cholo- 

 gogue purgative in constipation associated with jaundice and 

 hepatic disorders. The result of its action is said to be 

 more favorable when the faecal discharges are dark colored, 

 whereas calomel is more successful if the evacuations are of 

 a light hue. Diarrhoea, with frequent watery discharges, 

 and vomiting in dogs, due to atonic dyspepsia and a torpid 

 liver, may be relieved by podophyllin. 



SECTION XII.— TANNIC ACID AND DEUGS 

 CONTAINING IT. 



Galla. Nutgall. (U. S. & B. P.) 



Synonym. — Galls, E.; gallae, P.G.; noix de galle, galle de 

 chene, Fr.; gallapfel, G. 



An excresence on Quercus lusitanica Lamarck (nat. ord. 

 Cupuliferse), caused by the punctures and deposited ova of 



