On the Bases (Organic) in the Juice of Flesh. 295 



planation of this diminution in the weight of spherical mercury salt 

 obtained from portion C must therefore be sought in the more pro- 

 longed exposure of the flesh from which this extract was obtained 

 to bacterial influences. 



The spherical mercury salts obtained as above were decomposed 

 by H 2 S under water, and the acid nitrates evaporated in vacuo over 

 H 2 SO4 at the ordinary temperature. In each case crystals were ob- 

 tained isomorphous with the hydrochloride of urinary kreatinin. 

 These crystals when dissolved in water yielded acid solutions which 

 became sirongly alkaline when digested with pure lead hydrate at 

 the ordinary temperature. On evaporating the alkaline nitrates in 

 vacuo over sulphuric acid, the sarcous kreatinin formed in each case 

 anhydrous crystals isomorphous with the tabular kreatinin of urine. 



This sarcous kreatinin, therefore, differs from the urinary kreat- 

 inin in yielding anhydrous tables instead of efflorescent prisms when 

 prepared without application of heat. 



It appears, however, that the sarcous kreatinin may be rendered 

 efflorescent by similar treatment to that which changes tabular 

 urinary kreatinin into the efflorescent base, for the washings from the 

 precipitate by lead hydrate in solution of hydrochloride of kreatinin 

 from portion C were evaporated at 60 C., instead of at the ordinary 

 temperature, and the acid solution was treated with Pb(HO) 2 , 

 filtered, and the alkaline filtrate also evaporated at 60 C. A number 

 of long transparent needles formed, isomorphous with the efflorescent 

 kreatinin of urine, and these needles became opaque when dry. On 

 redissolving the efflorescent base in water and again evaporating, 

 tabular kreatinin separated out. 



A farther comparison of the properties of this sarcous kreatinin 

 reveals additional differences between this base and the kreatinin of 

 urine. 



In the table on p. 528, vol. 43, of the ' Proceedings,' I have laid 

 stress upon the following points in comparing different kreatinins : 



Solubility in water and alcohol, properties of platinum and gold 

 salts, and reduction of CuO, compared with glucose. 



Accordingly I have especially examined the sarcous kreatinin, 

 obtained as above described, with relation to these particulars. 



(1.) Solubility in Water of Sarcous Kreatinin. 



4' 1995 grams of solution of sarcous kreatinin in water, saturated 

 ab 13*7 C., left, on evaporation, O3575 gram of kreatinin. 



Therefore, 3'8420 grams of water dissolved O3575 gram of 

 kreatinin. 



Hence, 1 part by weight of kreatinin is dissolved by 10*74 parts by 

 weight of water at 13' 7 C. 



VOL. L. X 



