. The Cambridge natural history. Zoology. STRUCTURE 49 ostia, and passes out through the arteries to circulate through the organs of the body and to return by the ostia. The two figures below (Figs. 29 and 30) show the position of the arteries and the ostia in a single segment of the body. The heart is too small and delicate to be seen with the naked eye; it. Fig. 28.—Lithobius dis- sected. (After Vogt and Yung.) «, antennae. b, poison claws. c, brain. d^ salivary glands. e, legs. /, nerve cord. (7, Malpighian tube. h, Malpighian tube. 4, vesicnla seminalis. j, accessory gland. k, accessory gl
. The Cambridge natural history. Zoology. STRUCTURE 49 ostia, and passes out through the arteries to circulate through the organs of the body and to return by the ostia. The two figures below (Figs. 29 and 30) show the position of the arteries and the ostia in a single segment of the body. The heart is too small and delicate to be seen with the naked eye; it. Fig. 28.—Lithobius dis- sected. (After Vogt and Yung.) «, antennae. b, poison claws. c, brain. d^ salivary glands. e, legs. /, nerve cord. (7, Malpighian tube. h, Malpighian tube. 4, vesicnla seminalis. j, accessory gland. k, accessory gland. I, testis. w, thigh gland. »!, digestive tube. therefore requires the aid of the microscope. A freshly-killed animal was therefore taken and prepared in the manner known to all microscopists, and extremely thin slices or sections cut horizontally from its back. One of these sections cut the whole length of the heart in one segment, which was accordingly drawn under the microscope (Fig. 29), and shows a longitudinal hori- E VOL. T. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
