But, though the original or common type has never been departed from in essentials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt in subdividing them into natural minor groups... A History of Land Mammals in the Western Hemisphere - Page 411by William Berryman Scott - 1913 - 693 pagesFull view - About this book
| Zoology - 1890 - 414 pages
...Fiirbringer. Turning finally to the Mammalia, we find Sir William Flower writing thus of the Ruminants : — " The great difficulty which all zoologists have felt...skull frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation, that the different... | |
| Indiana. Dept. of Geology and Natural History - Geology - 1884 - 210 pages
...been departed from in essentials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt...variously combined in different members of the group. It appears, however, extremely probable that they soon branched into two main types, represented in... | |
| Indiana. Department of Geology and Natural Resources - Botany - 1884 - 238 pages
...been departed from in cxientials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt...subdividing them into natural minor groups arises from the (act that the changes in different organs (feet, skull, frontal appendages, teeth, cutaneous glands,... | |
| William Henry Flower, Richard Lydekker - Extinct animals - 1891 - 792 pages
...departed from in essentials, variation has been very active among them within certain limits ; and the great difficulty which all zoologists have felt...irregularity and absence of correlation that the different modificai Foi the anatomy of this group see AH Garrod, Proc. Zwl. f-oc. 1f77, p. 2. tioris of these... | |
| Natural history - 1897 - 476 pages
...Fiirbringer. Turning finally to the Mammalia, we find Sir William Flower writing thus of the Ruminants : — " The great difficulty which all zoologists have felt...skull frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation, that the different... | |
| Zoological Society of London - Zoology - 1875 - 838 pages
...subdividing them into natural groups (the "despair of zoologists," as Pucheran calls it) arises from the tact that the changes in different organs (feet, skull, frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation that the different modifications... | |
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