. Zoology. Zoology. CORAL-FORMINQ HTDROIDS. 23 eral round sacs, or "medusa-buds" which produce either male or female medusas. These medusa-buds are like the free medusae of Coryne. The marine Hydroids, then, are. Fig. 20.—Animal of Millepora nodosa, a, nutritive zooid; 6, reproductive »ooid; c, lasso-cell; d, the same coiled up in its cell; e, a third form. All highly magnified. usually of distinct sexes, growing by colonies, which are either male or female. The minute animals of Millepora secrete large coral-like masses on the reefs of Florida and the Pacific Ocean. The name is deri
. Zoology. Zoology. CORAL-FORMINQ HTDROIDS. 23 eral round sacs, or "medusa-buds" which produce either male or female medusas. These medusa-buds are like the free medusae of Coryne. The marine Hydroids, then, are. Fig. 20.—Animal of Millepora nodosa, a, nutritive zooid; 6, reproductive »ooid; c, lasso-cell; d, the same coiled up in its cell; e, a third form. All highly magnified. usually of distinct sexes, growing by colonies, which are either male or female. The minute animals of Millepora secrete large coral-like masses on the reefs of Florida and the Pacific Ocean. The name is derived from the num- berless minute holes or pores scattered over the surface in which the nutritive (Fig. 20, a) and reproductive zooids (Fig. 20, b) live. On breaking off pieces of the living coral one's hand is stung and made sore for days by the stings from the lasso-cells, so poisonous is this coral-like growth (Fig. 20, c, d, e). A common Hydroid on our north-fig. 21.—Poiypite of Co- ^ ^ .p-,. , ryne mirabilts, with ern shores is the Coryne (rig- -il), a medusa-bud at a. which differs from the foregoing kinds "'' ™ '^'^^'^ ' in producing a free bell-like form called a medusa or. 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 Packard, A. S. (Alpheus Spring), 1839-1905. N. Y. , Holt
Size: 1589px × 1572px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1897
