116 Recent Literature. [ February, 
the worms to the Mollusca, the Echinoderms and the Ccelenter- 
ates to the Protozoa. While we cannot agree with the learned 
author in some of. his views 
classification, the reader may be sure 
that the volume is a careful and reli- 
able presentation of the more inter- 
esting facts regarding these creatures, 
and which ‘Should be the property 
a Cc 
Fic, 1. == sacentae erally educated, 
carcini. “Natura who is not con- 
versant with i a theories as 
to the origin of the different forms 
of life ; and as there are several ave- 
nues which lead upto the Vertebrates 
from the lower animals, no wonder 
that a knowledge of the lower ani- Fig —Peltogaster curvatus ; 
mals, especially the groups described neath is “the larva or nauplius of Pe 
and figured in this volume, is quite ‘henopea, magnified = 
requisite. It should be said, however, that the ndati of 
vertebrate characters discoverable in the Ascidians, the Worms 
and the Molluscs, are recondite, and only appreciable after care- 
Fic. 3.—Lima flying through the water by opening and shutting its valves. 
ful embryological and anatomical studies. This subject is only 
incidentally referred to by Prof. Schmidt, and perhaps the intro- 
duction of too many anatomical cuts and schematic drawings 
would be considered as out of place in such a work as this. 
