The American Naturalist, Volumen30Essex Institute, 1896 |
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Página vi
... Relation between the Asco- mycetes and Basidiomycetes ( 1llustrated ) , 218 ; Polyporaceæ , Hydnaceæ and Helvellaceæ , 222 ; The Smut of Indian - Corn , 223 ; Antidromy and Crossfertilization , 223 ; New Species of Fungi , 313 ; Alaskan ...
... Relation between the Asco- mycetes and Basidiomycetes ( 1llustrated ) , 218 ; Polyporaceæ , Hydnaceæ and Helvellaceæ , 222 ; The Smut of Indian - Corn , 223 ; Antidromy and Crossfertilization , 223 ; New Species of Fungi , 313 ; Alaskan ...
Página vii
... Relation of Sugars to the Growth of Bacteria , 66 ; Algal Parasite on Coffee , 67 ; Smut Fungi by Oscar Brefeld , 137 ; Water Pores , 224 ; Biology of Smut Fungi , 224 ; Function of Anthocyan , 226 ; Ambrosia , 318 ; White Ants as ...
... Relation of Sugars to the Growth of Bacteria , 66 ; Algal Parasite on Coffee , 67 ; Smut Fungi by Oscar Brefeld , 137 ; Water Pores , 224 ; Biology of Smut Fungi , 224 ; Function of Anthocyan , 226 ; Ambrosia , 318 ; White Ants as ...
Página viii
... Relation of Myr- mecophile Lepismids to the Ants , 496 ; Lipophrys a Substitute for Pholis , 498 ; Blind Batrachia and Crustacea from the Subter- ranean Waters of Texas , 498 ; Lungless Salamanders , 499 ; Ba- trachia found at Raleigh ...
... Relation of Myr- mecophile Lepismids to the Ants , 496 ; Lipophrys a Substitute for Pholis , 498 ; Blind Batrachia and Crustacea from the Subter- ranean Waters of Texas , 498 ; Lungless Salamanders , 499 ; Ba- trachia found at Raleigh ...
Página xix
... Relation of Myrmeco- phile Lepismids to the Ants . 496 The Meaning and Structure room Bodies " of the Hex- 176 409 of the So - called " Mush- DEATION .. apod Brain ....... 157 Igneous Rocks in British Columbia Kienitz - Gerloff , Dr ...
... Relation of Myrmeco- phile Lepismids to the Ants . 496 The Meaning and Structure room Bodies " of the Hex- 176 409 of the So - called " Mush- DEATION .. apod Brain ....... 157 Igneous Rocks in British Columbia Kienitz - Gerloff , Dr ...
Página xxiii
... Relation of Sugars to the Growth of Bacteria ......... Relics of Glacial Man Reported 66 at the Buffalo Meeting ...... 781 Reptilia ......... 1052 Procotyla fluviatilis Leidy ... 1048 Progress in American Ornithol- ogy 1886-1895 . R. W. ...
... Relation of Sugars to the Growth of Bacteria ......... Relics of Glacial Man Reported 66 at the Buffalo Meeting ...... 781 Reptilia ......... 1052 Procotyla fluviatilis Leidy ... 1048 Progress in American Ornithol- ogy 1886-1895 . R. W. ...
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Página 911 - Its power of inducing fermentation in a solution of sugar was entirely destroyed, although no perceptible change in the appearance of the yeast cells could be detected under the microscope. This experiment was repeated several times, and always with the same result, although when the yeast was simply washed in water it readily induced fermentation.
Página 189 - Consequently, if the theory be true, it is indisputable that before the lowest Cambrian stratum was deposited, long periods elapsed, as long as, or probably far longer than, the whole interval from the Cambrian age to the present day; and that during these vast periods the world swarmed with living creatures.
Página 552 - Does the organism learn to make new adjustments, or to modify old ones, in accordance with the results of its own individual experience? If it does so, the fact cannot be due merely to reflex action in the sense above described, for it is impossible that heredity can have provided in advance for innovations upon, or alterations of, its machinery during the lifetime of a particular individual.
Página 431 - Their houses are mats or barks of trees, set on poles in the fashion of an English barn, but out of the power of the winds, for they are hardly higher than a man.
Página 169 - Illustrations of the dynamic metamorphism of anorthosites and related rocks in the Adirondacks...
Página 862 - Assistant Secretary of the Smithsonian Institution and Director of the National Museum, died in Washington, Sept.
Página 409 - Triarthrus. No traces of any special organs for this purpose have been found in this genus, and their former existence is very doubtful, especially in view of the perfection of details preserved in various parts of the animal. The delicacy of the appendages and ventral membrane of trilobites and their rarity of preservation are sufficient demonstration that these portions of the outer integument were of extreme thinness, and therefore perfectly capable of performing the function of respiration. Similar...
Página 544 - Naturalist. [July, ments) — but by the reinstatement of it by a discharge of the energies of the organism, concentrated as far as may be for the excessive stimulation of the organs (muscles, etc.) most nearly fitted by former habit to get this stimulation again (in which the " stimulation " stands for the condition favorable to adaptation).
Página 994 - We must therefore picture to ourselves a fertile plain occupying the whole of the Bristol Channel, and supporting herds of reindeer, horses, and bisons, many elephants and rhinoceroses, and now and then being traversed by a stray hippopotamus, which would afford abundant prey to the lions, bears, and hyaenas, inhabiting all the accessible caves, as well as to their great enemy and destroyer, man."* III.
Página 940 - In reviewing the results of these investigations and comparing one species with another, without losing sight of the fact that comparative good is not necessarily positive good, it appears that of 7 species considered the Downy Woodpecker is the most beneficial. This is due in part to the great number of insects it eats and in part to the nature of its vegetable food, which is of little value to man. Three-fourths of its food consists of insects, and few of these are useful kinds. Of grain, it eats...