Textile fabrics and their preparation for dyeing : with numerous engravings and diagrams (1906)
Hummel, J. J. (John James), -1902, Hasluck, Paul N. (Paul Nooncree), 1854-1931, Foster, A. R · Philadelphia : David McKay · leaf 52
enormously in size, to about 8-10 cm. (3-4 in. long) and about 5 g. (77 grains) in weight. As might be expected, such a rapid and enormous development necessitates a frequent renewal of the skin, and moulting takes place three or four times, at tolerably regular intervals of 4-6 days. On or about… … glands symmetrically situated on each side of the body of the caterpillar, below the intestinal canal. Each gland, as shown in Fig. 10, consists of three parts : a narrow tube (i c) with numerous convolutions, the veritable secreting portion ; a central part (c b) somewhat expanded, and con-…
Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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