1'KINCIPAL IT.KDINC I'KKHM). 



43 



T.UM.K V. I-:>l,,r-itl'-}iol-x<>l>ihl, phoxitfmrim -ill fmlnnc. .v /V/w/ywi/ jx'riod Continue*!. 

 KA1UUTS FKD INoU'JANIC 1' I l< >SI'I H )RUS. 



Date. 



1908. 



K.-l.mary 17 S 

 February J4 March i. 



M:in-h 2 



March 'i:. 



A\. r;u'.-.. 



K.-l.ruary 17 . 

 F.-hriiiirv.'l March 1.. 



" 

 -' 



nK' 



(i.-||. r:il :t\. r.l/' 



Ormm. 

 0.2797 



.2797 

 .2797 



. _'7'. 7 



Gram. 



.0080 



I N M N ) 



Gram. 

 ft 0173 



i i ; ; ' 



.0848 



,0000 



Gram. 

 0.0308 

 .0370 



. .U.'x 



!OOM 









.-_: 7 



. J7'.7 

 .J7''7 



.0081 



moo 



i i i N i 



O|M, .0502 



.0030 .1110 



,,..,., 



.S7U 



..'77.. 



.0149 



.iill-.i 









Gram. 

 0.2481 



.2707 



.22M 



.Ji:) 



^^^= 



Grams. 

 1.7664 



1 I7"J 

 1.5308 



.4400 





. <..7s.x 



I :, 



U _' 

 I I 





4.1 



Tin 4 liirim-s also show that in tin- 'asi >f the rahhits fed 01 

 ])hos|)honi> a r..M>i.|-niM' ani.Miii! !' rt h.-r-alcohol soluhle plios- 

 ])ho!-ii- '.-(I in the frc<->. 'I'hi' aiial\-^ ..f' th lVr.-> ,,!' the 



rabbits fed in>ru r anie phosphorus show that there i> -mne ethei- 

 alcohol s)lul)le j)ho>j)horus al\\a\v pn->eiit. 'I'his amount must 

 cnine from the ether-aleohol soluble phosphoric ..f the food, or from 

 the seeretions of the intestinal juiee>. There is nn doiiht that the 

 feediniT <>f ])hytin. \\hich eontain> n..V.i j>er rent of plmspbnnis in this 

 form, irreatly inciva>e> the amount of ether-aleohol soluble phos- 

 phorus in the fooes. The insoluble calcium phosphate formed in the 

 LTaM ro-inteMinal tract of the rabl>it> fed iimr-^anic phosphorus may 

 tend to irivc a higher ratio of ct hei -alcohol >oluble phosphni'iis in the 

 feoefl of the rabl>it> fed \\ith phytin. Fui'ther, the results indicate 

 that of the total pbn>plmrus eliminated in the fe068 the percentaLTe of 

 ether-aleohol soluble jilmspborus is much larger in the case nf the 

 rabbits fed on organic plinsj>lmru>. Thi> may indicate that when 

 phytin i> fed in lar_re amounts the gastro-intest inal tract is not able 

 to >plit and absorb it all. ('oii>r<|uently the ]>ercontage of ether- 

 alcohol >oluble phosphorus in the feces is increased. The question 

 of the presence of organic phosphorus in the urine is still unsettled. 

 In the principal feeding period the phosphorus in the urine was 

 determined by the uranium acetate titration method, and, further, 

 the lecithin phosphorus, ether-alcohol method, was applied to the 

 urine after evaporating inn cc to dry ness. The figures which are 

 given in Table VI show that the urine results for phosphorus obtained 



