1884.] . Zoölogy. 635 
in the intestine, for, on squeezing out the contents of the latter, 
green color and the band both disappear. It was then shown 
that chlorophyll could hardly be of much use in respiration, as 
oxydizing and reducing agents do not affect it; that for protective 
purposes or in mimicry a body of less complex chemical com- 
position might answer equally well, except that the eyes of some 
invertebrates may be more susceptible to rays of light of a certain 
wave-length than our own, especially as Sir John Lubbock has 
own that ants perceive the ultra violet rays of the spectrum 
which are invisible to us. It may possibly be the persistence of 
corresponds with the principal chlorophyll band between B and C. 
In the case of enterochlorophyll this coloring matter may be of 
use in furnishing material for the construction of other coloring 
matters, especially as this body and Lemochromogen exist side 
by side in the bile of some mollusks; and in the bile of the sheep 
parasitic algae, as in Spongilla and Hydra, and that it is in some 
pam Produced synthetically by and in the bodies of animals.— 
nal of the Royal Microscopical Society, December, 1883. 
king ons and their increasing complication in the animal 
tions a He gives a summary of facts deduced from observa- 
a various writers. ; 
pear £ functions of the endodermal ciliated chambers and cells ap- 
search be respiration and the prehension of nutriment, recent re- 
e, seeming to deny them the—at any rate the exclusive— 
the vie actual digestion. The mesoderm probably shares in 
E function; the claim of the ectoderm to this position is 
“fp, ndisputable. The occasional occurrence of lipostry and 
tothe, does not affect this question much, but relates chiefly 
of ep timer of disposing of the used-up water. The function 
| on is transferred in. lipostomy to other canals and 
