Mi:.M()li;s OF TIIH NAIIONAL ACADKM V OF HCIKNCKS. T.') 



Out i)n,l,id ixtrartril hn lirohntli.i ii,r ,riit polush solution nftir our lioiir's coiitart of tin- yroitml 

 uaUi with water (18). 



yl«A.— 0.27GO ffrain, dried at ll()ot!., gave 0.0045 pram a8li=l.G3 per cent. 



Carbon tntd /li/rf/oi/t-H.— 0.2!t5;? gram gave OfyrylC, giaiii C( ).=.">!. .'51 per (M-iitC, and ().1!)04 gram 

 Il20=7.1(> per cent O. 



Xitrof/in, I ( Kjdilahl method). — ().5SG7 gram gave aininoiiia = iL'.l cc I ICl ( 1 cc. = (I.OOSli2 gram 

 N):=lG.!».-)peri'ont N. 



Nitrogen, II (IhtniKS method).— O.'tVM gram gave 75.49 oc. N at 15'^ G. (barometer 75;}.G mm. 

 at 230 0.)= 17.03 per cent N. 



SuIjjhur.—O.l-JU) gram gave 0.03(i5 gram BaSO^ = 0.005013 S = 0.G9 per cent S. 



In thi.s analysis the fusible a.sli made the combustion of the last traces of carbon dillicult; 

 licnce, probably ash and nitrogen are stated a little too high and the carbon is slightly inaccurate, 



5. EXTRACTION WITH POTASH SOLUTION AFTKR A DAY'S CONTACT OF THE GROUND 

 OATS WITH WATER. 



(Preparation 19.) 



One hundred grams of oats were treated in the manner just described, except that instead of 

 the 1,000 cc. of potash solution first added, 1,000 cc.of distilled water were used. After standing a 

 day, the a([ueous solution, wliieli had become clear, was decanted, and 1,000 cc. of twotenth.s per 

 cent potash solution were added to the residue and let stand upon it over night. The solution 

 was then decanted from the residue, liltered, precipitated with acetic acid, the precipitate was 

 washed with hot alcohol of 0.9 sj). gr. and with absolute alcohol and ether, and dried over sul- 

 phuric acid. The preparation weighed 2.55 grams. The following figures were obtained in its 

 analysis : 



Oat proteid, extracted Ity ticoienths per eent potash solution after one day's contact icith water, 19 



Cirbon . . 

 Hydrogen 

 NitToccn 

 Sulpliur.. 

 Oxvi;en . . 

 Ash 



16!89 



22! 46 

 0.59 



.'-.2.61 

 6.»2 

 16.99 



22! 59 



100 00 I 100.00 



A.<)h. — 0..557S gram, dried at 110^ C., gave 0.00.33 gram ash = 0.59 per cent. 



Carhou and hydrogen. — 0.3300 gram gave 0.0.327 gram CO? = 52.29 per cent C. and ().2(t42 

 gram H.U =Ci.iiS \wv cent II. 



Xitrof/cn ( Kjeldahl method). — 0..")42G gram gave ammonia = 11.15 cc. HCl ( 1 cc. = 0.()()S_'2 gram 

 N) = 1G.89 per cent X. 



tiulphur.—0.^\W gram gave 0.0543 gram lla.SO, = O.O074C gram S = 0.89 per (!ent S. 



