The American Naturalist, Volume 6Essex Institute, 1872 |
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Página viii
... Cells for Mounting Objects , p . 497. The Common Paraboloid as an Immersion Instrument , p . 498. Bichromatic Vision , p . 499. New Arrangement of Spring Clips , p . 499. Single Front Objectives , p . 500. Microscopy at the American ...
... Cells for Mounting Objects , p . 497. The Common Paraboloid as an Immersion Instrument , p . 498. Bichromatic Vision , p . 499. New Arrangement of Spring Clips , p . 499. Single Front Objectives , p . 500. Microscopy at the American ...
Página 17
... cells . Fig . 10 shows the nervous fil- aments distributed to the papillæ : a , a branch of the fifth pair of nerves passing beneath the papillary ridge and sending filaments to each papilla . These papillary branches interchange ...
... cells . Fig . 10 shows the nervous fil- aments distributed to the papillæ : a , a branch of the fifth pair of nerves passing beneath the papillary ridge and sending filaments to each papilla . These papillary branches interchange ...
Página 18
... cells , d , for the most part of a hexagonal form , and which were most abun- dant about the anterior part of the eye ; 3d , beneath the pigment a single layer of colorless cells , c , larger than a pigment cell , and each cell having a ...
... cells , d , for the most part of a hexagonal form , and which were most abun- dant about the anterior part of the eye ; 3d , beneath the pigment a single layer of colorless cells , c , larger than a pigment cell , and each cell having a ...
Página 19
... cells at the anterior part of the globe . It is said that the blind fishes are acutely sensitive to sounds as well as to undulations produced by other causes in the water . In the only instance in which I have dissected the organ of ...
... cells at the anterior part of the globe . It is said that the blind fishes are acutely sensitive to sounds as well as to undulations produced by other causes in the water . In the only instance in which I have dissected the organ of ...
Página 28
... cells ; d , layer of pigment cells ( iris ? ) ; e , lens . Lens , enlarged and showing the cells . Eye , enlarged , showing the muscular bands , a , a , a , a ; b , the lens pressed out of place ; c , the optic nerve . FIG . 6. Top of ...
... cells ; d , layer of pigment cells ( iris ? ) ; e , lens . Lens , enlarged and showing the cells . Eye , enlarged , showing the muscular bands , a , a , a , a ; b , the lens pressed out of place ; c , the optic nerve . FIG . 6. Top of ...
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abundant allied Amblyopsis AMER American angular aperture animal appear arrowheads Asa Gray base birds blind fish bones Botany cave cells character collection color common coral Cretaceous crustaceans described Devonian diameter edge eggs Elliott Coues elytra epidermis eyes fact fauna feet female figured flowers fossil genera genus geology give glacial glass habits head hundred inches Indian insects interesting islands jasper Journal known Lake larva larvæ leaves length lens less male Mammoth Cave Mass ment microscope miles mountains Natural History NATURALIST nearly nest North noticed O. C. Marsh object observed obtained ornithology pamph paper peculiar Plains plants plate portion prairies present probably Prof region remarks represented River rocks says scientific seems seen side South sparrow species specimens stomata stone streams surface tail tion trees valley vegetation wings Wyandotte Cave Zoology