On the Bases (Organic) in the Juice of Flesh. 



289 



It occurs in hard glistening anhydrous prisms usually radiat- 

 ing from a common centre. The aqueous solution of these crystals is 

 acid to litmus and gives a yellow precipitate on addition of silver 

 nitrate solution. This precipitate (Ag 3 P0 4 ) is much increased on 

 carefully neutralising the liquid with ammonia. 



When heated the crystals lose water and fuse. The fused mass 

 dissolves slowly in water to a neutral solution, which gives a white 

 flocculent precipitate with silver nitrate (AgP0 3 ), 



1"349 grams of the crystals lost 0'1835 gram of H 2 on ignition, 

 corresponding with 13'602 per cent of the original weight. 



According to the equation KH 2 P0 4 = KP0 3 + H 2 0, the crystals 

 would theoretically lose 13*22 per cent. 



0'985 gram of the crystals gave 2'999 grams of Ag 3 P0 4 , corre- 

 sponding with 0-680 gram P0 4 , i.e., 69'03 per cent. P0 4 . 



The filtrate from the Ag 3 P0 4 was freed from silver by HC1, and 

 the K in the filtrate converted into K 2 S0 4 by H 2 S0 4 , evaporation, &c. 



The weight of K 2 S0 4 , obtained from 0'985 gram of the KH 2 P0 4 , 

 was 0*6652 gram, which corresponds with 0"2986 gram of potassium, 

 or 30-31 per cent. K. 



The hydrogen in the salt was determined by titration with lime- 

 water of known strength. 0'112 gram of the salt was neutralised by 

 0-05739285 gram of Ca(HO) 2 . 



According to the equation 3KH 2 PO 4 -|-3Ca(HO) 2 = Ca 3 (P0 4 ) 2 + 

 K 3 P0 4 +6H 2 0, this result indicates 0*00155 gram of hydrogen, or 

 1'38 per cent, of hydrogen. 



These results agree with the formula KH 2 P0 4 . 



Eequired for KH 2 P0 4 . 

 Loss of H 2 on ignition 13*22 



K 

 H 



28-72 



1-47 



69-81 



100-00 



Found. 

 13-602 



30-31 



1-38 



69-03 



100-72 



The preparation of pure acid potassium phosphate from the 

 watery extract of flesh is especially interesting as showing how a 

 mere product may be taken for an educt. 



It is well known that Liebig has described potassium chloride as a 

 constituent of fresh muscle substance ; and no doubt many observers 

 who have followed out his process for the preparation of kreatine 

 have obtained cubical crystals of potassium chloride on treating the 

 mother liquors from the kreatine with alcohol. 1 have myself never 



