The American Quarterly Microscopical Journal, Volume 1Hitchcock and Wall, 1878 Includes the Transactions of the New York Microscopial Society. |
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Halaman 11
... produce no sensible effect upon the nervous system of any of the higher animals , much less on that of another ... producing an effect upon the nervous system , would be worse than arming soldiers with Gatling guns without ammu- nition ...
... produce no sensible effect upon the nervous system of any of the higher animals , much less on that of another ... producing an effect upon the nervous system , would be worse than arming soldiers with Gatling guns without ammu- nition ...
Halaman 21
... produced which germinate and grow without the intervention of any male product ; while in the other both male and female organs are present , and fertilization takes place giving rise to a spore , which remains at rest a much longer ...
... produced which germinate and grow without the intervention of any male product ; while in the other both male and female organs are present , and fertilization takes place giving rise to a spore , which remains at rest a much longer ...
Halaman 22
... producing a terminal cell with a length some eight times its breadth . This sporangium is always larger than the ... produce a mottled appearance shown in Fig . 4 , Pl . IV . , 22 American Quarterly Microscopical Journal .
... producing a terminal cell with a length some eight times its breadth . This sporangium is always larger than the ... produce a mottled appearance shown in Fig . 4 , Pl . IV . , 22 American Quarterly Microscopical Journal .
Halaman 25
... produce even a greater growth after than it had made before the formation of the first sporangium . I found a form growing on some very small bull - heads , which after the first sporangium had developed , sent out , in many cases ...
... produce even a greater growth after than it had made before the formation of the first sporangium . I found a form growing on some very small bull - heads , which after the first sporangium had developed , sent out , in many cases ...
Halaman 26
... produced without the intervention of sexual reproduction , or in a single vegeta- tion period , I have not been able to ascertain . A series of ex- periments bearing partially upon this point , and showing a great variation in the form ...
... produced without the intervention of sexual reproduction , or in a single vegeta- tion period , I have not been able to ascertain . A series of ex- periments bearing partially upon this point , and showing a great variation in the form ...
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Istilah dan frasa umum
acid air angle alcohol Algæ ampulla ampulla of Vater angular aperture animal antheridia apertometer apparatus appearance balsam angle bands blood body branches Bréb cavities cells chlorophyll cilia circular color cylindrical described diameter diatoms division duct of Santorini duct of Wirsung ductus choledochus examination exhibited eye-piece fibers filaments fluid frustule gelatinous genus glass glycerin granules growth H. L. Smith Häckel Hitchcock immersion inch insect intestine lancets layer length lens light measured membrane method micrometer Microscopical Journal MICROSCOPICAL SOCIETY microscopists minute mounted nucleus objective oblique observed obtained oogonia oogonium opening organ pancreatic paper plants plate present Prof pylorus rays red corpuscles refraction Saprolegnia screw seen sheath showing shown side slide space species specimens spherical sporangia sporangium spores stained standard structure surface swarm-spores terminal thin tion tissue tube walls Zeiss zoospores Zygospores
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Halaman 63 - The average deviation for accumulated errors, under similar conditions, is not far from -g^^^ of an inch for eleven intervals. For a large number of intervals the deviation will be somewhat larger, but it will not be proportional to the number of intervals. 3. A single observer can obtain an agreement with a normal equation representing all the observed values as far as a solution by least * 'Midland Naturalist,
Halaman 290 - Proboscis, lengthened tongue, though, strictly speaking, it is formed by a prolongation of the under lip. It is not tubular, as Swammerdam had supposed, but solid throughout; and the minute depression at its extremity is not the aperture of any canal through which liquids can be absorbed. Cuvier, in his...
Halaman 17 - Disc large, diam. .0038, valves very much inflated and densely packed with minute radiating punctae , which are scattered loasely and irregularly at the centre, and sometimes radiate from two central blank spaces. In the living form, the connecting membrane is broad, and the highly inflated valves cause it to lie obliquely. There is a characteristic circlet of minute spines, within the margin of the valves, and the subulate blank spaces so .characteristic of A. Ralfsii are more or less apparent....
Halaman 65 - ... it was proposed to adopt a definition of the term which, right or wrong, should be recommended to the microscopists of the country as a convenient and uniform usage. The triangle method was proposed for general adoption, considering the angular aperture of a microscope objective to be the angle of the apex of a triangle having a base equal to the available diameter of the front lens, and a height equal to the actual focal length (working distance), measured in air for a dry lens, and in the fluid...
Halaman 255 - INDEX MEDICUS.— A Monthly Classified Record of the Current Medical Literature of the World.
Halaman 186 - Microscope," by Mr. Wenham. The principle of operation consists in causing rays of light to pass through the under side of the glass slip upon which the object is mounted, at the proper angle for causing total-internal reflection from the upper surface of the thin cover, which is thus made to...
Halaman 39 - It was noticed, too, that other corpuscles were prone to pass out at the particular point of previous emigration, so that sometimes several would be crowded together along the vascular wall, and an hour later would be in close proximity external to the vessel opposite the same point. This phenomenon occurred usually not in the minutest capillaries, but rather in the large capillaries and small veins, ranging from ^ to ^ inch in diameter.
Halaman 289 - The manner," says Mr. Newport, "in which the honey is obtained when the organ is plunged into it at the bottom of a flower, is by ' lapping, ' or a constant succession of short and quick extensions and contractions of the organ, which occasion the fluid to accumulate upon it and to ascend along its upper surface, until it reaches the orifice of the tube formed by the approximation of the maxilla?
Halaman 265 - ... living germ, and that the germs continue to multiply and increase by an independent action of their own — if this be indeed true, why do the germs after a certain time cease to multiply and allow the sick person to recover.
Halaman 211 - ... under exactly the conditions which prevail in actual work with this instrument. It was therefore determined to try the method with the meridian circle of Harvard College Observatory. Professor Pickering kindly authorized the expense of the construction of the necessary apparatus, which was designed by Mr. Geo. B. Clark, of the firm of Alvan Clark & Sons, and which was made under his superintendence. A ring having an outside face of two inches was made in two halves and securely fastened to the...