150 INORGANIC AGENTS 



calcaria phosphorica, P. G.; phosphate de chaux hydrate, 

 Fr.; phosphorsaure kalkerde, G. 



Derivation. — Obtained from bone ash (impure calcium 

 phosphate) by solution in hydrochloric acid and purified by 

 precipitation with ammonia water and by washing with water. 



Properties, — A light, white, amorphous powder; odor- 

 less and tasteless and permanent in the air. Almost insol- 

 uble in cold water ; insoluble in alcohol ; easily soluble in 

 hydrochloric or nitric acids. 



i)o5e.— H., 3 ii.-iv. (8.-15.); C, ^ss.-i. (15.-30.); Sh. & Sw., 

 3i.-ii. (4.-8.); D., gr.v.-xx. (.3-1.3). 



Syrupus Calcii Lactophosphatis. Syrup of Calcium Lacto- 

 phosphate. (U. S. P.) 



Precipitated calcium carbonate 25 



Lactic acid 60 



Phosphoric acid 36 



Orange flower water 25 



Sugar 700 



Water, a sufficient quantity to make 1000 



Dose, — Foals and calves, Jss.-i. (15.-30.); D., 3 i.-iv. 

 (4-15.). 



Calcium Phosphate. 



Action and Uses. — liime phosphate is a constituent of 

 bone to the extent of 50 per cent, and of the soft tissue in 

 less amount. It is, therefore, essential to the body as a 

 tissue builder, and is a food rather than a medicine. 

 Disease of bones (rickets) can be artificially produced by 

 withholding calcium phosphate from the food. Other bone 

 diseases (fragilitas ossium and caries) occur naturally in 

 animals receiving an insufficient diet. These same diseases 

 disappear on treatment with calcium phosphate. The value 

 of the salt in these disorders, therefore, appears to be 

 conclusive. Moreover, in wasting affections phosphates are 

 eliminated in considerable amount by the urine. A reason- 

 able deduction would lead us to use phosphates in such 

 conditions. The diseases most appropriately treated with 



