1^ '-\^ ^■■■'Tyi^lf.KA.t.j.^J^ 



^^ 



OBSERVATIONS 



Gemmule and Egg Development 



^ OF 



MARINE SPONGES 



BY 



HENRY V. WILSON 



Reprinted from Journal of Morphology, Vol. IX., No. 3 



BOSTON 



OINN & COMPANY 



1894 



