Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 810
sts. But what they serve mostbeautifully to demonstrate is the canal system, of which the distri-bution is here most remarkably complete and symmetrical. At d,dl, d2 are seen three turns of a spiral canal which passes along oneend of all the segments of the like number of convolutions, whilst… … Fig. 568.—Internal cast of Polystomella craticulata: a, retral processesproceeding from the posterior margin of one of the segments ; b, bl, smoothanterior margin of the same segment; c, cl, stolons connecting successivesegments, and uniting themselves with the diverging branches of the meri-dional…
Microscopy
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