File:The microscope and its revelations (1856) (14778415945).jpg

Identifier: microscopeitsrev1856carp (find matches)
Title: The microscope and its revelations
Year: 1856 (1850s)
Authors: Carpenter, William Benjamin, 1813-1885
Subjects: Microscopy Microscopes Microscopy
Publisher: London : John Churchill
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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a), the privet hawk-moth (Sphinx ligustri),the small tortoise-shell butterfly (Vanessa urtica), the meadow-brown butterfly (Hipparchia janira), the brimstone-moth(Rumia crat(2gata), and the silk-worm (Bomhyx mori), maybe particularly specified; and from other orders, those ofthe cockroach (Blatta orienfalis), field cricket (Acheta caw-pestris), Avater scorpion (Nepa ranatra)^ bug (Cimex lectularim), * See the Memoirs of M. Lacaze-Duthiers Sur Iarmure genitale des In-sectes, in Ann. des Sei. Nat. 3ieme Ser., torn, xii., xiv., xvii., xviii., xix.;and M. Ch. Robins Memoire sur les Objets qui peuvent 6tre conserves enPreparations Microscopiques (Paris, 1856), which is peculiarly full in theenumeration of the objects of interest afforded by the class of Insects, EGGS OP INSECTS.—KEPEODUCTION OF APHIDES. 681 cow-dimg-fly (Scatophaga stercorarid), and blow-% (Muscavomitoria). In order to preserve these eggs, they must bemounted in fluid in a cell; since they will otherwise dry-up Fig. 296.
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Eggs of Insects, magnified:—A,Pantia napi; b, Vanessa iirticm ;c, Sipparcliia tithotis ; D, Argynyiis Lathonia. and become misshapen.—The remarkable mode of reproduc-tion that exists among the Aphides must not pass unnoticedhere, from its curious connection with the non-sexual repro-duction of Entomostraca (§ 36.9) and Rotifera (§ 279), as alsooi Uj/dra (§ 301) and Zoophytes generally, all of which fallspecially, most of them exclusively, under the observation ofthe Microscopist. The wingless Aphides which may be seenin the spring and early summer, may be considered as larvaeor pupge (the earlier states of this insect not being distin-guishable from its perfect form, except by their want ofwings); and these larvae, which, though commonly designatedas females, are really of no sex, give origin to a brood ofsimilar wingless Aphides, which come into the world alive, andwhich, before long, go through a like process of multiplication.As many as from seven to ten successive broods ma

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