KKVIKW < >!' I.I I i.KA IT UK. 17 



cll'ect that feeding hydrochloric acid produce, first an increa-^ : nd 

 then a decrea-e in the phosphorus (P,O 5 ) excreted in the urine. The 

 determination favor* the view that the body phosphates are con- 

 cerned with neutralizing the acid and wilh its removal from the body. 



U >os (i on feeding thyroids to dogs got an increased phosphoric 

 acid excretion and alter extirpation of the thyroids found that the 

 elimination of phosphoru- was decreased. Phosphorus elimination 

 -eems to be regulated, in part at least, by those glands, the relation- 

 ship being similar to that A\hich probably exists between calcium 

 and pho-phnric acid and the ovaries, and that between iron and the 

 spleen. 



I is dillicult to give a typira: urine analysis >n account of its \ aria- 

 tious. Tin- follow-in. may be of ue, though only ap- 



proximate li for the quantities of the most important 



inorganic constituents which are e'iminated by an a 



II on a mixed diet in tin* course of twenty-four hours in a quan- 

 tity of ! . 



Grams. 

 .Hill rhloi. .......................... 16. 



Sulphur: .......... 



Phofpho: ........ 



Pot i 



Aiiimoni ... .7 



IfagnOU M_<> ..... ....... :, 



Lin ..... .3 



.lining i normal. ... .2 



... 25.0 



Phosphoric acid -. . id urin< u double MH i PO 4y and 



pal! .iple M.ilPO,, botli of the>e plu^phales being found ill 



acid Ulinee at fcbie -aim- time. On found that on an average 60 per 



M|' the total pi d \\as double, and 40 per cent was 



simple acid phosphate. The total quantity of pho>phoric acid is 



d)le and depend- on the kind and th- ;\ M|' the food. The 



p!iM-p!iMi-ie acid eliminated by man i.> in round 



numb-i> 2.5 a rial ion of from 1 to ."> grams per twenty- 



four hour-. A -mall j.ait of the phosphoric acid of the urine origi- 



nate- from the burn :iic compounds such as nuclei n, pro- 



:i, and lecithin within the organi-m. The greater part originate- 



fro! 11 the phosphates of the food, and the quantity of eliminated phos- 



phoric acid i r when the food is ridi in alkali phosphate.^ in 



o the quantity of lime and magnesium phosphates. If 



iitain^ much lime and magnesium, large quantities 



.rthy plio-phat. iiminated in th< 4 excrements; and even 



though the food contain- con>iderabie amounts of phosphoric acid in 



. riu-in., ; J!>. 6Zte. i.h\M'.l. < h.-in., iss(i, 10:1. 



: M)_l{ull. 12:5 09 - 2 



