CELL DEVELOPMENTS 
(Highly Magnified) 
After Haeckel, and Parker 
A, B, PROTAM(EBA PRIMITWA, showing changes of form. C, D, E, in process of division. 
F, G, early stages of cells in union. H, MORULA stage. K, BLATOSPHERE stage. 
L, M, N, O, GASTRULA stages. P, larva of POLTGORDIUS NEAPOLITANUS in 
TROCOSPHERE stages. R, same in advanced TBOCOSPHERE stage. S, same in condition 
intermediate between the TROCOSPHIRE and the adult worm. 
To face page 6 
