Proceedings of the American Academy of Arts and Sciences, 20권American Academy of Arts and Sciences., 1885 |
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4 페이지
... seen . Was named by me O. arctica in Hall & Harbour's collection , no . 143 , and O. Uralensis , var . pumila , in Proc . Am . Acad . vi . 235 , and O. Lagopus , Nutt . , was wrongly referred to it . From the references this would seem ...
... seen . Was named by me O. arctica in Hall & Harbour's collection , no . 143 , and O. Uralensis , var . pumila , in Proc . Am . Acad . vi . 235 , and O. Lagopus , Nutt . , was wrongly referred to it . From the references this would seem ...
15 페이지
... seen with a good magnifier and in a certain light . . . . I do not , however , consider the forcipulate character of this segment beyond a doubt . It is perhaps not improbable that it may have been modified much as in the males of ...
... seen with a good magnifier and in a certain light . . . . I do not , however , consider the forcipulate character of this segment beyond a doubt . It is perhaps not improbable that it may have been modified much as in the males of ...
37 페이지
... seen at one ( aboral ) end of the ovum , and that they change position so as to be of no use in orien- tation . The long axis is regarded as the axis of the ovum , and the first cleavage as equatorial , since it cuts the axis at right ...
... seen at one ( aboral ) end of the ovum , and that they change position so as to be of no use in orien- tation . The long axis is regarded as the axis of the ovum , and the first cleavage as equatorial , since it cuts the axis at right ...
38 페이지
... seen that the exceptions in the direction of the first cleavage - plane are neither so numerous nor so serious as might at first be supposed . For the most part they are cases in which the data for exact orientation have escaped ...
... seen that the exceptions in the direction of the first cleavage - plane are neither so numerous nor so serious as might at first be supposed . For the most part they are cases in which the data for exact orientation have escaped ...
42 페이지
... seen . We have watched this period through twice on artificially fertilized ova , and not less than a dozen times on ova taken directly from the sea . The Newport Labora- tory is so near the place from which most of our material was ...
... seen . We have watched this period through twice on artificially fertilized ova , and not less than a dozen times on ova taken directly from the sea . The Newport Labora- tory is so near the place from which most of our material was ...
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Abdomen abdominal appendages Acad acetic acetic acid acid acute Antennæ anthracene appears areola Astacus Barrande base Bentham blastodisc blastomeres border Boston bracts branches broad California calyx Cambarus Cambridge carapace cells Cephalothorax cervical groove chela ciliate cleavage cleavage-plane collected corolla difference of potential Dikelocephalus dorsal Emmons entoderm Eritrichium faune feet flowers foliis fossils fruit genera genus glabrous Graptolites Gray gynobasi Hagen inches long lateral leaflets leaves length less limestone lines long lobes longis Magn male margin maxillipeds median Mountains nearly nuclei Nuculæ nutlets oblong observations Olenus ovum pair of legs papillæ Paradoxides pedicels periblast petioles plate Point Lévis posterior Potsdam precipitate Primordial fauna Proc pubescent punctate ring River rostrum sæpius sandstone schists second fauna segment sepals short side Silurian slates slender somites species specimens spermogonia spines stars superficial tension surface Taconic system telson third tion Trilobites tube upper ventral