 | Othniel Charles Marsh - Evolution - 1877 - 76 pages
...plants, as their nature indicates, are most unsatisfactory witnesses; that invertebrate animals are much better ; and that vertebrates afford the most reliable...under influences that the lower forms pass through iu safety. The more special applications of this general law, and its value in geology, will readily... | |
 | Geology - 1877 - 564 pages
...plants, as their nature indicates, are most unsatisfactory witnesses; that invertebrate animals are much better ; and that vertebrates afford the most reliable...perfection of their organization, or zoological rank. FisheSj for example, are but slightly affected by changes that would destroy Reptiles or Birds, and... | |
 | American Association for the Advancement of Science - Science - 1878 - 476 pages
...upper Jurassic of Wyoming has recently been described bv the writer, and named Dryolestetpri*cut.—OCM better ; and that vertebrates afford the most reliable...subdivisions of the latter group, moreover, and in fact nil forms of animal life, are of value in this respect, mainly according to the perfection of their... | |
 | Joseph John Murphy - Biology - 1879 - 650 pages
...plants, as their nature indicates, are most unsatisfactory witnesses ; that Invertebrate animals are much better; and that Vertebrates afford the most reliable...respect, mainly according to the perfection of their organisation or zoological rank. Fishes, for example, are but slightly affected by changes that would... | |
 | Joseph John Murphy - 1879 - 636 pages
...plants, as their nature indicates, are most unsatisfactory witnesses ; that Invertebrate animals are much better; and that Vertebrates afford the most reliable...respect, mainly according to the perfection of their organisation or zoological rank. Fishes, for example, are but slightly affected by changes that would... | |
 | International Geological Congress - Geology - 1893 - 602 pages
...this purpose, plants are not satisfactory witnesses; that invertebrate animals are much better; but that vertebrates afford the most reliable evidence...geological changes. The subdivisions of the latter group, and, in fact, all forms of animal life, are of value in this respect, mainly according to the perfection... | |
 | Earth sciences - 1896 - 524 pages
...plants, as their nature indicates, are most unsatisfactory witnesses: that invertebrate animals are much better; and that vertebrates afford the most reliable...under influences that the lower forms pass through iu safety. The more special applications of this general law, and its value in geology, will readily... | |
 | Science - 1898 - 1090 pages
...plants, as their nature indicates, are unsatisfactory witnesses ; that invertebrate animals are much better ; and that vertebrates afford the most reliable...perfection of their organization or zoological rank. Fislies, for example, are but slightly affected by changes that would destroy reptiles or birds, and... | |
 | Henry Woodward - Geology - 1898 - 654 pages
...plants, as their nature indicates, are unsatisfactory witnesses; that invertebrate animals are much better; and that •vertebrates afford the most reliable...subdivisions of the latter group, moreover, and in fact all forme of animal life, are of value in this respect, mainly according to the perfection of their organization... | |
 | British Association for the Advancement of Science - Science - 1899 - 1456 pages
...plants, as their nature indicates, are unsatisfactory witnesses ; that invertebrate animals are much better ; and that vertebrates afford the most reliable...respect, mainly according to the perfection of their organisation or zoological rank. Fishes, for example, are but slightly affected by changes that would... | |
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... better ; and that vertebrates afford the most reliable evidence of climatic and other geological changes. The subdivisions of the latter group, moreover, and in fact all forms of animal life, are of value in this respect, mainly according to the perfection... 