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Studies on the comparative anatomy of sponges 1888 arthur dendy on amazoncom free shipping on qualifying offers this scarce antiquarian book is a facsimile reprint of the original due to its age it may contain imperfections such as marks. Studies on thjb comparative anatomy of 32 sponges5 studies on the comparative anatomy of sponges ii on the anatomy and histology of stelo spongus flabelliformis carter with notes on the development by arthur dendy bisc fis demonstrator and assistant lecturer in biology in the universit of y melbourne with plates xxx xxxi . Journal of invertebrate pathology 11 302 309 1968 studies on the internal defense mechanisms of sponges ii phagocytosis and elimination of india ink and carmine particles by certain parenchymal cells of terpios zeteki 1 thomas c cheng erik rifkin and herbert w f yee laboratory of symbiology department of zoology university of hawaii honolulu hawaii 96822 received october 24 1967 . The first period of sponge development studies falls on the last third of the 19 th century it was the golden age of sponge embryology about 110 articles on this topic were published fig 2. Comparative functional anatomy of nervous system in invertebrates protozoa poriferans or the sponges are the only multicellular animals without a nervous system they do not show any neurons or sensory cells