Compounds of Albumin and Myosin. 321 
Examining now, all of the results obtained, we find the following 
average composition of the albuminates studied : 
Copper compound, 0°94 per cent. Cu 
Tron compound, 0:95" << cones 
Zine compound, O;ouT ss Sop Zin 
Lead (neutral salt) compound, BOGuacy eb 
Uranyl compound, 4:60 ‘* eal 
Silver compound, AO9N s¢* Sere Ato-+ 
Mercury compound, 2700) sgl a Ife 
Accepting Lieberkiihn’s formula of albumin as correct, then the 
following formulz accord most closely with the above percentages. 
(C72Hi12N1sSO22), + Cu— Hz requires 0°96 per cent. Cu 
(Cy2Hi12Ni12SO20)4+ Fe—Hs . 0°86 r Fe 
(Op FiiNgeSOs3) 24m — Fy int 4) O99) fei Zn 
(CAHN. SO. hb= ee O50 se Bh 
(Cy2H112NisSOo2)3 + U—He os 4-73 f U 
(CreHii2NisSO2e)s+Ag.—H. ‘“ 4:28 i Ag 
(CreHii2Nis8Oo.),+Hg—-H. “ 3:00 “* Hg 
We do not, however, lay much stress upon the accuracy of these 
formule. The results obtained in our study of these metallic com- 
pounds do by chance accord with them, and inasmuch as Loew and 
Harnack are disposed to treble Lieberkiihn’s formula for albumin, on 
the basis of the composition of the copper and silver albuminates, 
made by them respectively, we present our results as evidence that 
there are equally good grounds for quadrupling the above formula. 
We believe, however, that with the majority of these albuminates 
it is possible to form a large variety of compounds with the same 
metal, by simply modifying the conditions of precipitation. This is 
evidenced by Loew’s results with silver albuminate and our own 
with lead and copper, and since a great variety of compounds are 
possible, it is equally possible that in many cases we may have to do 
with mixtures of such compounds, which would account for the great 
variability in composition noticed in some of the albuminates and 
tor the lack of agreement in the results obtained by different workers. 
Coupled with this, in some cases, is the undoubted tendency of the 
compounds to dissociation. 
Il. Myosin. 
The myosin employed was prepared from ox flesh, by extraction 
with a 15 per cent. solution of ammonium chloride, after the tissue 
* Hxcepting one very low result. | Excepting the last series of compounds. 
TRANS. CoNN. ACAD., Vou. VII. 41 Nov., 1886. 
