376 



Dr. C. A. MacMunn. 



that in red extended from \674 — 653'5. Treated with nitric acid it 

 became greenish and the usual series of five bands could be detected. 

 The partially decomposed liver (which had broken down into a 

 greenish-white pulp) in another specimen gave four bands when a 

 strong light was concentrated on its surface, viz., a band in red 

 covering C, another close before D, one just before E, and the fourth 

 between b and F. No haematin could be detected. 



Liver of Fusus antiquus. — The filtered golden-yellow rectified spirit 

 extract showed in a deep layer four bands, and in a thinner a fifth at 

 F. These closely agreed with those seen in the similar extract of 

 liver of Buccinum;- that in red extended from X676 — 660, the next 

 X620 — 600, and the third perhaps from X583 — 567. With nitric acid 

 the solution became greenish and the five bands already referred 

 to were seen distinctly. No other pigments were detected. With 

 magnesium and acetic acid a neg'ative result was obtained. 



Liver of Purpura lapillus. — The golden-yellow rectified spirit extract 

 of the liver gave three bands in a deep layer coincident with the 

 bands of the above alcohol extracts,- thus that in red extended from 

 X678 — 656. And the colour changed to greenish with nitric acid, the 

 usual series of five bands becoming developed at the same time. 

 Owing to the presence of the purpurogenous glands* in this mollusc, 

 I hoped to find some peculiarity in the pigments of its liver, but it 

 contained apparently only enterochlorophyll. 



Liver of Litorina litorea. — The absolute alcohol filtrate of the liver 

 was a yellow colour, and gave three bands in a deep layer and a 

 fourth in a shallow depth, Which are the same bands seen in other 

 cases. The following measurements apply to the spectrum of the 

 above-mentioned solution: — 



1st Band \678— 661 



2nd rt \f,20— 600 



3rd „ X552— 539 



4th „ A516— 480? 



On treatment with nitric acid the usual series of five bands could 

 be detected with ease. 



Liver of Helix aspersa. — When the liver and bile of any Pulmonate 

 Mollusc is examined, except that' of Planorbis — so far at least as I 

 k now — a striking difference between them and those of other Mollusca 

 is apparent, since now for the first time reduced hasmatin is met 

 with both in the bile and in the alcohol extract of the liver, accom- 

 panied in most, and probably in all cases, by enterochlorophyll. Dr. 



* Schunck, "Notes on the' Purple of the Ancients," " Journ. Cliem. Soc.,' 

 vol. xxxv, p. 589 (1879) and vol. xxxvii, p. 613 (1880). 



