. Elementary lessons in zoölogy : a guide in studying animal life and structure in field and laboratory. Zoology. CCELENTERATES. THE FRESH-WATER SPONGE. (Myenia Jluviatilis.) Study of Live Specimens. — Examine fresh specimens.^ Note: — 1. Their/orm. 2. Their attachment: upon what kind of surfaces they are found growing. 3. Their color. 4. Their odor^ pecul- iar, not unpleasant in life, but rapidly becom- ing very disagreeable if any specimens have died. This rapid decomposi- tion of the sponge flesh betrays its animal nar ture. Examine the surface of the sponge with a Spicules of Fresh-water S
. Elementary lessons in zoölogy : a guide in studying animal life and structure in field and laboratory. Zoology. CCELENTERATES. THE FRESH-WATER SPONGE. (Myenia Jluviatilis.) Study of Live Specimens. — Examine fresh specimens.^ Note: — 1. Their/orm. 2. Their attachment: upon what kind of surfaces they are found growing. 3. Their color. 4. Their odor^ pecul- iar, not unpleasant in life, but rapidly becom- ing very disagreeable if any specimens have died. This rapid decomposi- tion of the sponge flesh betrays its animal nar ture. Examine the surface of the sponge with a Spicules of Fresh-water Sponge {,My- g-nod lens to find the os^fi- enia fluviatilis): a, skeleton spicules; gooa lens tO nna ine OSCe the others, gemmule spicules seen sidewise oles (or exhalent opeTtr at 6 and d, endwise at c and e. • n i. j; i. • i, • mgs)^ out 01 which, in life, currents of water are continually flowing. Examine it still more closely to find the minute but multitudinouo pores (or inhalent openings) which cover. 1 Directions for collecting are given in Appendix, p. 279. 22. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Needham, James G. (James George), 1868-1956. New York : American Book Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
