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[...] the corpuscles not only in the blood, but in all the tissues of the silkworm. Osimo, in 1857, discovered the corpuscles in the eggs, and on this observation Vittadiani founded, in 1859, a practical method of distinguishing healthy from diseased eggs. The test often proved fallacious, and it [...]
[...] as aforesaid, recommended the examination of the eggs [...]
[...] beſore risking their incubation. Pasteur showed that both eggs and worms might be smitten and still pass muster, the culture of such eggs or such worms being sure to entail disaster. He made the moth his starting-point [...]
[...] determine their practice, Pasteur hit upon the expedient of prophecy. In 1866 he inspected at St. Hippolyte-du Fort fourteen different parcels of eggs intended for incu bation. Having examined a sufficient number of the moths which produced these eggs, he wrote out the predic [...]
[...] hend, hesitate in his choice. - Pasteur describes in detail his method of securing healthy eggs, which is nothing less than a mode of restor [...]
[...] Cuckows' Eggs WHAT is the drift of this discussion on the eggs of the cuckow 2 Is it “natural selection,” “mimetic analogy,” or [...]
[...] and deposited in nests of 1, Bergeronette brun (Motacilla ca/ensis); 2, /3. coryphaeus ; 3, Gobemouche mantelé (Tºhitrea cyanome/as); and others, whose eggs I do not know. Of 1, the eggs are greyish white, or rather nankin, minutely freckled with brown ; of 3, they are cream-coloured, profusely spotted [...]
[...] nests of Zºycnonotus ca/ensis, whose eggs are rather deep lake, profusely spotted with dark markings : They also, I know, lay in the nests of Pycnonotus migricans—eggs as of the last. I found Mud-birds (Maſacircus engalensis) in Ceylon, feeding a young O. melano/eºcos, and their eggs are of a uniform deep [...]
[...] young O. melano/eºcos, and their eggs are of a uniform deep verditer. Chalcites auratus lays white eggs also, and some of my corre spondents have sent what I believe to be their eggs taken from the nests of Z/ºphantornis capitalis, whose eggs are green, pro [...]
[...] for her talents, love of natural history, and powers of obser vation. We often discussed this subject. She and her sons assured me they never cared to select eggs like those of the foster-parent, but simply eggs of those whose food they knew to be similar. They said the confusion they caused was most [...]
[...] very extensively used in German histological laboratories for the study and preservation of all kinds of delicate tissues, such as sections of the developing hen's egg, morbid growths, fine injec tions, nerve tissues, &c., is as follows: The section, either from a fresh specimen or from one preserved in alcohol, is placed in a [...]
[...] result of repeated examinations of these substances in the man ner above stated, has been that not a trace of anything like an organism—no fungus-spore, germ, or egg of any kind—has been found in solutions of any of the substances employed, ex cept in one. This one in which such bodies have been ſound is [...]
[...] plants, as seen in castor oil, rape oil, linseed oil, cocoa nut oil, palm oil, and a hundred others. As it is found in the seeds of plants, so it is found in the eggs of animals. The embryo of all animals is developed in contact with oil, of which we have a familiar instance in [...]
[...] animals. The embryo of all animals is developed in contact with oil, of which we have a familiar instance in the yelk of the egg of birds. It appears also that the muscular and other tissues grow under the fostering influence of the adipose tissue. [...]
[...] Mollusca. In an important memoir, also accompanied by two plates, M. J. Borsenkow describes the developmental history of the ovary and egg in the common fowl. For the botanist we have a continuation of M. L. Gruner's cata logue of plants collected on the Dnieper and the lower part [...]
[...] on the specimens sent to Paris states that the water is turbid, and contains a quantity of matter in suspension, having the smell of rotten eggs, due to sulphuretted hydrogen. The taste is alka line. Such is the condition of the specimens in Paris, but in its natural situation the water is inoffensive in odour. The pre [...]
[...] spent in examining the different forms of Infusoria brought for exhibition. Before separating it was announced that the subject for the next meeting in July, would be the “eggs of Articulata,” i.e. of insects, &c. PARIS [...]
[...] was read from M. Pasteur on the results of the rearing of silkworms from eggs prepared by processes of selection at Villa \{centina. –M. C. Robin communicated a note by M. A. Sanson on \e influence of the rapid development of the bones upon their [...]
[...] his experiments; for if any organism originates independently of a parent similar to itself, surely it is reasonable to expect the pro duction to be at once perfect, and not in the egg state. Could an oviparous animal be produced from heterogenous materials, surely one would not expect eggs first to appear. In referring [...]
[...] monia. But it would be well to ascertain if this ratio is really constant, for although this may be the case with white of egg, is it not almost too much to assume that the nitrogenous organic matter present in natural water acts in the same manner as albumen, when we [...]
[...] Dr. Beale appears to consider them in a special form for each separate structure in the body originating in the primary mass of bioplasm of the egg. From each subdivision of the latter “in pre-ordained order, and with perſect regularity more are produced, no doubt according to laws, but laws which we know [...]
[...] and Marshal Vaillant contributed some extracts, showing the advan tages which have been obtained in various places by the adoption of the processes of selection of silkworm's eggs recommended by M. Pasteur.—M. Decaisne presented a note by MM. Planchon and Lichtenstein on the specific identity of the Phylloscerae of the [...]
[...] A short time ago I addressed you on the subject of Cuckow’s eggs, giving you some experiences of my own. I now have much pleasure in forwarding to you a portion of a letter on the same subject from an esteemed and observant correspondent, [...]
[...] “Your remarks on the eggs of the cuckow tribe are very in teresting. I confess that I am, a believer in natural selection, and Darwinian in my opinions, but nevertheless in this matter I [...]
[...] parasitic. - “Many of the different species of the cuckows of this country lay white eggs; the whole of those included in the genus Chal. cites produce white eggs, the birds upon which they are parasitic are the various species of Fringillidae, they do not, however, [...]
[...] white unspotted appearance, but for their size also, which is nearly twice that of the Cape canary, and considerably larger than the eggs of the ‘Streep Koppie.’ “I have also found the egg of the ‘Dedric' in the nest of the green Sun-bird (Mectarinia famosa), where it was also much [...]
[...] “I have also found the egg of the ‘Dedric' in the nest of the green Sun-bird (Mectarinia famosa), where it was also much larger than the grey speckled eggs of the sun-bird, and likewise dissimilar from its pure white colour. - “The egg of Cuculus solitarius is of a dark mahogany brown, [...]
[...] norius phanicurus), when its difference was obvious both in size and colour, my son (F. H. Barber) found one of these dark brown eggs in the nest of the Cape canary 1 and despite its great dissimilarity compared to the small white speckled eggs of that bird, the work of incubation was quietly going on. [...]
[...] posed upon. Birds in general have no suspicion on this score, they suspect no trickery, and are therefore willing to incubate any kind of egg, provided it is not too large to fill up the nest. I think I told you how I had occasionally changed the eggs of various species of birds from one nest to another, making fearful [...]
[...] A REMEDY has been found for the “borer" that ravages Indian and Ceylon coffee plantations, by applying carbolic acid before the eggs are hatched. [...]
[...] Cuckow’s Eggs.-E.D. LAYARD . . . . . . . . . . . . . Special Modification of Colour in the Cushat.—W. C. McIntosh . Colour Blindness. --R. B. HAyward . . . . . . . . . .314 [...]
[...] covered by the violent barking of a little dog who was puzzled and alarmed by the apparition of so strange a visitor. Both specimens were fed on raw eggs and chopped raw beef, and seemed to thrive. Besides observations of this sort, Mr. Adams's readers will find scattered through [...]
[...] the ancient black rat of Britain.-T. H. Potts exhibited chicks a few days old of Anarhynchus frontalis, showing the character istic crooked bill, and also the eggs and manner of nidification, along with those of Charadrius bicinctus ; completely establishing the marked difference between the two birds.-W. T. L. [...]
[...] Grebe in New Zealand. He has reason to think that they pair for life, and stated that they make additions to the height of their nests, as inundation takes place, but that the eggs will retain their vitality though immersed in water for a considerable time, and inferred that this might have some connection with the [...]
[...] coloured mucous layer with which the shell becomes coated during incubation.—Dr. Hector said he had ſound the nest con taining eggs in a tidal lagoon, where it must have risen and fallen with the tide. The eggs were not discoloured. He also exhibited a dusky variety of the bird along with its chick, which is [...]
[...] all animals and plants to spring from what he terms a “primor dium regetale,” a phrase which may nowadays be rendered “a vegetative germ ;” and this, he says, is “oviforme,” or “egg like; ” not, he is careful to add, that it necessarily has the shape of an egg, but because it has the constitution and nature of one. [...]
[...] doubt what these solid particles are ; for the blowflies, attracted by the odour of the meat, swarm round the vessel, and, urged by a powerful but in this case misleading instinct, lay eggs out of which maggots are immediately hatched upon the gauze. The conclusion, therefore, is unavoidable; the maggots are not [...]
[...] which maggots are immediately hatched upon the gauze. The conclusion, therefore, is unavoidable; the maggots are not generated by the meat, but the eggs which give rise to them are brought through the air by the flies. These experiments seem almost childishly simple," and one [...]
[...] Now, Schroeder and Dusch found, that, in the case of all the putrefiable materials which they used (except milk and yolk of egg), an infusion boiled, and then allowed to come into contact with no air but such as had been filtered through cotton-wool, neither putrefied nor fermented, nor developed living forms. It [...]
[...] meister, and other helminthologists, has succeeded in tracing every such parasite, often through the strangest wanderings and metamorphoses, to an egg derived from a parent, actually or potentially like itself; and the tendency of inquiries elsewhere has all been in the same direction. A plant may throw off bulbs, [...]
[...] develop into the original form. A polype may give rise to Medusae, or a pluteus to an Echinoderm, but the Medusa and the Echinoderm give rise to eggs which produce polypes or plutei, and they are therefore only stages in the cycle of life of the species. - [...]
[...] As I have already mentioned, it has been known since the time of Vallisnieri and of Reaumur, that galls in plants, and tumours in cattle, are caused by insects, which lay their eggs in those parts of the animal or vegetable frame of which these morbid struc tures are outgrowths. Again, it is a matter of familiar experience [...]
[...] engaged in silk growing are some thirty millions sterling poorer than they might have been ; it means not only that high prices have had to be paid for imported silkworm eggs, and that, aſter investing his money in them, in paying for mulberry-leaves and for attendance, the cultivator has constantly seen his silkworms [...]
[...] phyton ; for the reason that in subjects in which the disease is strongly developed, the corpuscles swarm in every tissue and organ of the body, and even pass into the undeveloped eggs of the female moth. But are these corpuscles causes, or mere con comitants, of the disease ? Some naturalists took one view and [...]
[...] directly or indirectly, to the alimentary canal of healthy silk worms in their neighbourhood ; it is hereditary, because the corpuscles enter into the eggs while they are being formed, and consequently are carried within them when they are laid ; and for this reason, also, it presents the very singular peculiarity of [...]
[...] bodies are either quite indeterminate, as in the case of planets, stones, trees, &c., or they vary within moderate limit, as in the case ºf...seeds, eggs, &c.; but, even in these cases, small quantitive differences are met with which do not interfere with the essential Properties of the body. Even crystals, which are so definite in [...]
[...] chemical agencies upon the growth and development of living beings he soon finds strikingly illustrated ; the mysterious process of development itself is readily observable in the eggs of the common water-snails and in those of freshwater fish, so that the way in which the various organs and systems of organs are [...]
