Compounds of Albumin and Myosin. 327 
No. Amt. Sub. taken. Wt. Be.Os. Per cent. Fe.0;. Per cent. Fe. 
5a 0-4551 gram. 0:0167 gram. 3°68 2°57 
b 03668 0:01387 3°73 2°61 
6a 0:3783 0:01388 3°64 2°53 
b 0°3675 0:01381 3°57 2°50 
Ta 04284. 0°0148 3°34 2°33 
b 04041 ‘0°0186 3°37 2°36 
Series III. 
With a large excess of ferric chloride. 
la 04385 00269 6°13 4-29 
b 06939 00436 6°27 4°38 
In none of these preparations was there any attempt made to add 
a definite amount of ferric chloride, but the iron salt was added until 
a good precipitate was obtained. Undoubtedly, the amount of iron 
salt added, modifies materially the composition of the compound. In 
series IIT it is seen that the content of iron is about double the aver- 
age amount contained in the other preparations. The average 
amount of iron (Fe) in the first two series of compounds is 2°29 per 
cent. 
ce. Zine compounds. 
With zine sulphate, myosin is thrown down from its ammonium 
chloride solution as a heavy gelatinous precipitate. Like the iron 
compound it is partially soluble in sodium and ammonium hydroxides, 
swelling up to a gelatinous mass. It is insoluble in nitric, hydro- 
chloric and sulphuric acids, but is partially soluble in acetic acid. In 
composition, it is seen to be very closely allied to the zine albu- 
minate. Following are the results obtained by analysis of the dried 
compounds : 
Series I. 
No. Amt. Sub. taken. Wt. ZnO, Per cent. ZnO. Per cent. Zn. 
la 0:6108 gram. 0:0049 gram. 0°81 0-64 
b 06619 0:0055 0°83 0°66 
2a 0°6611 0:004:7 0-71 0°57 
b 0°8006 0:0059 0°73 0-59 
3a 04666 | 0:0046 0:99 0:79 
b 04494 0:0044 0:99 0-79 
4a 0:5936 0:0048 0-80 0°64 
b 06926 )-0055 0-79 0°63 
