Proceedings of the American Academy of Arts and Sciences, Volumen51Metcalf and Company, 1915 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 300
... absorption or by plasmecdysis . Their absorption is indicated by vacuoles with small stained granules in their centers . The conditions above described are indicative of the ingestion by this organism of some form of alkaline liquid ...
... absorption or by plasmecdysis . Their absorption is indicated by vacuoles with small stained granules in their centers . The conditions above described are indicative of the ingestion by this organism of some form of alkaline liquid ...
Página 327
... absorption and that the daughter axostyles are re - formed out of " the central spindle or centrodesmus " between the daughter blepharoplasts . His figures are inconclusive at the critical stage , however . Prowazek and Beaurepaire ...
... absorption and that the daughter axostyles are re - formed out of " the central spindle or centrodesmus " between the daughter blepharoplasts . His figures are inconclusive at the critical stage , however . Prowazek and Beaurepaire ...
Página 619
... absorbed moisture without dehydration . The material deserves further investigation , however . Hg ( NO3 ) 2 was the first of the nitrates tried which was not univa- lent . I know of no cases of polymorphism among this class ; there is ...
... absorbed moisture without dehydration . The material deserves further investigation , however . Hg ( NO3 ) 2 was the first of the nitrates tried which was not univa- lent . I know of no cases of polymorphism among this class ; there is ...
Página 629
... Absorption of Radiant Energy Eclipse Blindness and Allied Phenomena Possible Specific Action of Infra - Red Experiment relating to accuracy of fixation Experiment with quartz mercury lamp enclosed in globe Protective Glasses Ultra ...
... Absorption of Radiant Energy Eclipse Blindness and Allied Phenomena Possible Specific Action of Infra - Red Experiment relating to accuracy of fixation Experiment with quartz mercury lamp enclosed in globe Protective Glasses Ultra ...
Página 631
... absorbed by a few cm . or dm . of air , and the X - rays are practically only produced in apparatus intended for that purpose . The spectra given by all ordinary sources range between the more modest limits just given . In the earlier ...
... absorbed by a few cm . or dm . of air , and the X - rays are practically only produced in apparatus intended for that purpose . The spectra given by all ordinary sources range between the more modest limits just given . In the earlier ...
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Términos y frases comunes
abiotic abiotic action abiotic effects abiotic radiations absorption albite antheridia atoll axostyle basal cell Birch-Hirschfeld blepharoplast cataract change of volume chromatic basal rod chromosomes coral cornea corneal corpuscles crystals curve cytoplasm cytostome depth diameter diaphragm distally energy ergs erythropsia experiments exposed exposure feldspars FIGURE filaments flagella flagellum glass granules heat effects hyaline II-III intensity islands lagoon larva later lens epithelium Leptomyrmex less longis magnetite magnetite arc measurements mesenteries microcline minutes mitosis myxosporidium nearly normal nuclei observed obtained ocean parabasal paradesmose perithecium perthitic phase photophthalmia Pleistocene posterior pressure produced quartz reaction receptacle reefs retina scotoma screen sea-level shown side slightly species spectrum spore sporoblasts stage stained surface temperature theory thermic thickness tion transition line Trichomonas triple point ultra violet ultra violet light undulating membrane usually values velocity wave length μμ
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Página 734 - ... condition. Turn-over pig molds when not in use should be left upside down to prevent their accumulating moisture. GLASS-BLOWERS' CATARACT It has been recognized for many years that glass-blowers appear to be particularly susceptible to a special form of cataract, which begins in the posterior part of the lens, the remainder of the lens for a long time remaining clear. The cataract most frequently appears in the left eye, which is more exposed to the molten mass. The length of time necessary for...
Página 510 - Koch, G. von. 1882. Ueber die Entwicklung des Kalkskeletes von Asteroides calycularis und dessen morphologischer Bedeutung. Mitt. Zool. Sta. Neapel, Bd. Ill, p. 284-292, Taf. 22-24. 1897. Entwicklung von Caryophyllia cyathus.
Página 238 - ... perhaps, the most interesting conclusion in this volume), that the movements must either have been uniform and exceedingly slow, or have been effected by small steps, separated from each other by long intervals of time, during which the reef-constructing polypifers were able to bring up their solid frame-works to the surface.
Página 625 - The investigation has been assisted in great measure by generous grants from the Bache Fund of the National Academy of Sciences and from the Rumford Fund of the American Academy of Arts and Sciences. The...
Página 479 - AE Kennelly and GW Pierce. The Impedance of Telephone Receivers as Affected by the Motion of their Diaphragms.
Página 541 - ... group of the same rank, under the same name. When a species is moved from one genus into another, its specific epithet must be changed if it is already borne by a valid species of that genus.
Página 166 - The causes of the general rise of sea-level in the latest geological time might perhaps be connected with those climatic changes which the earth underwent in the Glacial period. If, during that time, northern Europe, northern North America, and the Antarctic regions were simultaneously glaciated, a considerable mass of water must have been removed from the ocean, and, if the thickness of ice be assumed as 1,000 meters, the sea-level must have been 150 meters below its present...
Página 740 - Bell indicate their belief most clearly in the statement "as regards definite pathological effects or permanent impairment of vision from the exposure to the luminous rays alone, we have been unable to find either clinically or experimentally anything of a positive nature. "Experiments on animals and on the human subject as well prove that the retina may be flooded for an hour or more with light of extreme intensity (not less than 50,000 lux) without any sign of permanent injury. Only when the concentration...
Página 196 - ... the atolls of the Low Archipelago the depth varies from 20 to 38 fathoms, and in the Marshal Group, according to Chamisso, from 30 to 35 : in the Caroline atolls it is only a little less. Within the Maldiva atolls there are large spaces with 45 fathoms, and some soundings are laid down of 49 fathoms. The greater part of the bottom in most lagoons, is formed of sediment; large spaces have exactly the same depth...
Página 364 - Trichomonaden und ihre Organisation im allgemeinen. Arch. f. Protist., Bd. 39 MARTIN, CH, AND ROBERTSON, MURIEL 1911 Further observations on the coecal parasites of fowls with some references to the rectal fauna of other vertebrates. Part I. Quart Jour. Mic. Sci., vol. 57. SWEZY, OLIVE 1916 The kinetonucleus of flagellates and the binuclear theory of Hartmann. Univ. of C'al. Publ. in Zool., vol. 16.