164 SYNOPSIS OF VETERINARY 



hyoscyaminae sulphas — Hyoscyamine Sulphate. Soluble 

 in 0.5 part of water and 2.5 parts of alcohol. 



Dose. — Horse, grs. J / 2 to 2 ; dogs, 1-60 to 1-30, hypodermic- 

 ally should not exceed gr. 1-65. 



• hyoscyaminae hydrobromas — Hyoscyamine Hydrobromate. 

 — Soluble in 0.3 part of water and 2 parts of alcohol. 



Dose. — Same as the sulphate. 



hyoscinae hydrobromas — Hyoscine Hydrobromate. — Solu- 

 ble in 2 parts of water and in 13 parts of alcohol. 



Dose. — Horse, grs. 1-6 to 1-3; dogs, 1-150 to 1-100. 



These alkaloids are very expensive, costing from 15 to 30 

 cents per grain. 



Physiological Actions. — Similar to belladonna and stramo- 

 nium, but less powerful and less irritant, and the most calmative 

 and hypnotic ; it is more stimulating to the vaso-motor system 

 and the cardiac accelerator apparatus than is stramonium, but 

 less active upon the pneumogastric, its delirium is never furious, 

 and is without congestion of the brain. To sum up the action of 

 hyoscyamus, it is hypnotic, anodyne, antispasmodic, vaso-motor 

 and cardiac accelerator and stimulant. 



Uses. — It is principally used as a hypnotic and anodyne 

 when opium is contra-indicated, it is used in delirium of azoturia, 

 or to prevent delirium, combined with Fluid Extract of Gelsem- 

 ium, for such cases full doses are given ; it is a good anodyne to 

 combine with cannabis indica in spasmodic colic ; in constipation, 

 combined with purgatives, it aids their action and prevents grip- 

 ing ; it is used in irritable conditions of the kidneys and bladder ; 

 is eliminated by the kidneys. 



Hyoscine hydrobromate is indicated in spasmodic and nerv- 

 ous conditions and to allay sexual excitement. 



AMYL NITRIS— AMYL NITRITE. 

 V 



Yellowish or reddish yellow liquid, oily, very volatile, peculiar 

 and very diffusive ethereal odor, insoluble in water, but soluble 

 in all proportions in alcohol, ether and chloroform. 



Dose. — Horse (internally) 10 to 30 ms., up to 1 dr., but is 

 very seldom given internally; hypodermically, J4 this dose. By 

 and it must be fresh, as it rapidly deterio- 



