CHAPTER III
[The Connection between Structure and Function] 44
Protozoa: [A Study of the Cell], 44; [Comparative Study], 48; [Review and Library Exercise], 49; [Sponges], 51; [Review and Library Exercise], 53. Cœlenterates: [Hydra], 54; [Comparative Study], 58; [Review and Library Exercise], 59. Worms: [Living Earthworm], 61; [External Morphology], 64; [Internal Morphology], 64; [Microscopic Anatomy], 66; [Summary], 68; [Review and Library Exercise], 70; [Connection between Structure and Function], 72.