VOLUME I.

PROTOZOA, by MARCUS HARTOG, M.A., D.Sc.; PORIFERA (SPONGES), by IGERNA B. J. SOLLAS, B.Sc; COELENTERATA AND CTENOPHORA, by S. J. HICKSON, M.A., F.R.S.; ECHINODERMATA, by E. W. MACBRIDE, M.A, F.R.S.

_FIELD._--"The book can be in the strongest manner recommended to those for whose benefit it has been written. We know of no work from which a more truly scientific account of the Protozoa, Echinodermata, and other lower forms of animal life could be gained."