International Journal of Microscopy & Natural Science, Volume 13Bailliere, Tindall & Cox., 1894 |
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Page 21
... attacks on a large scale , are aware of the extent of their operations and of their great importance in the economy of the vegetable kingdom . Fewer still are acquainted with the fact that these small insects are them- selves attacked ...
... attacks on a large scale , are aware of the extent of their operations and of their great importance in the economy of the vegetable kingdom . Fewer still are acquainted with the fact that these small insects are them- selves attacked ...
Page 22
... attacked by the Aphis Nymphæ , are some- times saved from destruction by a parasitic Allotria , which destroys as many as 90 per cent . This statement led me to watch for facts bearing upon the percentage of insects thus killed by ...
... attacked by the Aphis Nymphæ , are some- times saved from destruction by a parasitic Allotria , which destroys as many as 90 per cent . This statement led me to watch for facts bearing upon the percentage of insects thus killed by ...
Page 25
... attacking the Rose Aphides on the leaves placed under the glass shade . Strength seems greatly increased . On seizing a winged insect a wing is generally first broken to disable it from flight . The larva then seizes its victim by the ...
... attacking the Rose Aphides on the leaves placed under the glass shade . Strength seems greatly increased . On seizing a winged insect a wing is generally first broken to disable it from flight . The larva then seizes its victim by the ...
Page 26
... attacking larva had seized the other . June 3. The bitten larva was hanging dead from the edge of the leaf exactly as when bitten . June 14. Two of the chrysalides yielded imagos to - day , both Coccinella Bi - Punctata . Thus the ...
... attacking larva had seized the other . June 3. The bitten larva was hanging dead from the edge of the leaf exactly as when bitten . June 14. Two of the chrysalides yielded imagos to - day , both Coccinella Bi - Punctata . Thus the ...
Page 27
... attacking and , in part , of eating their own kind is due to an inherited instinct . The variety of colour appears to be no bar to the commerce of the sexes , a red female and a black male imago having been taken in coitu during June ...
... attacking and , in part , of eating their own kind is due to an inherited instinct . The variety of colour appears to be no bar to the commerce of the sexes , a red female and a black male imago having been taken in coitu during June ...
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Common terms and phrases
alcohol Algæ aniline animals Aphides Aphis appearance bacilli bacteria balsam beaded forms body capsule cent colour contains corpuscles cover-glass covered Crown 8vo decolourised dentine desmids diameters Diatoms diplococci distilled water dust eggs elytra epithelium epithelium cells examined extremity fibres filaments filter flagella fungi fungus ganglion gentian violet give glands glass glycerine granules of myelin illustrations inch insects JOURNAL OF MICROSCOPY larva larvæ London magnified mass matter membrane method methyl violet microscope MICROSCOPY AND NATURAL minute mounted mucus myelin nerve nerve-fibres nitric acid nucleus object observed odontoblasts ordinary organs ovum paper paraffin parasites particles plant plasomen plates portion preparation Price protoplasm pulp cavity quantity Rotifers sections seen segments sheath showing shown slide solution species specimens sporangium spores sputa sputum stained with gentian structure substance surface tibiæ tion tissue tooth trachea tube vegetable washed Whooping-cough
Popular passages
Page 280 - that the actual seat of whooping cough is in the head, and that the affection of the respiratory organs is only to be considered as the secondary effect, or as an effort of nature to relieve herself by expanding the lungs to an unusual degree, and thereby allowing a greater quantity of blood to flow into them, which may in some degree diminish the fullness and congestion in the head.
Page 122 - It is, I think, generally assumed, not only that the world really exists as we see it, but that it appears to other animals pretty much as it does to us. A little consideration, however, is sufficient to show that this is very far from being certain, or even probable.
Page 20 - ... receptacle furnished with a filter in the lower end, An air-pump supplies air to the receptacle, and by its pressure forces the collodion through the filter, removing all impurities. The collodion flows into a horizontal tube armed with three hundred cocks having glass spouts pierced by a small hole of the diameter of the thread of a cocoon as it is spun by the silkworm. The spinner opens the cock and the collodion issues in a thread of extreme delicacy. This thread, however, is not yet fit to...
Page 94 - ... feet in height, roofed with, orchid-stems that slope to the ground, regularly radiating from the central support, which is covered with a conical mass of moss, and sheltering a gallery round it One side of this hut is left open, and in front of it is arranged a bed of verdant moss, bedecked with blossoms and berries of the brightest colours. As these ornaments wither they are removed to a heap behind the hut, and replaced by others that are fresh. The hut is circular and some 3 feet in diameter,...
Page 366 - ... the blood and other fluids found in the animal tissues. He describes a method by which media can be prepared directly from these fluids by a process which reduces the difficulties of manipulation to a minimum. Break up the white of a hen's egg with an egg-beater till it loses its consistency ; add 40 per cent, of water and mix well ; pass the mixture through muslin to remove any shreds of insoluble material; add oi per cent, of caustic soda, and solidify in the autoclave.
Page 110 - THE BRITISH REPTILES: A Plain and Easy Account of the Lizards, Snakes, Newts, Toads, Frogs, and Tortoises indigenous to Great Britain.
Page 215 - ... drawings like those which have been found in caves in France and in the cave at Thayngen. It was found in the lowest part of the yellow " Kulturschicht " among bones and teeth of reindeer, horses, and other animals. On one side are a horse, a foal, and a reindeer, while several horses appear on the other. The style is not so fine as that of the Thayngen drawings, but, according to Herr...
Page 129 - At the place where the upper tracheal sac contracts there is, moreover, a conical striated organ, which is situated at the back of the leg, just at the apical end of the upper tracheal sac. The broad base lies against the external wall of the leg, and the fibres converge inwards. In some cases I thought I could perceive indications of bright rods, but I was never able to make them out very clearly.
Page 329 - THE STUDY OF THE BIOLOGY OF FERNS BY THE COLLODION METHOD. For Advanced and Collegiate Students.
Page 218 - ... or by experiment. Directions are given for the collection of specimens, for their preservation, and for preparing them for examination; also for performing simple physiological experiments.