...If the present conditions in the Wyomingelk herds continue to prevail for several generations, as sure astime goes on we shall see a marked deterioration in the size andantlers of the elk... 
William T. Hornaday 「Our Vanishing Wild Life」
...In the twin certainties of over-population, and deterioration fromexcessive killing of the good sires, we have to face two newproblems of very decided importance...
William T. Hornaday 「Our Vanishing Wild Life」
...Baring declares that neither he nor his gamekeeper have everbeen able to discover any deterioration in the deer of Lambay,either in size, weight, size of antlers, fertility or generalphysical stamina...
William T. Hornaday 「Our Vanishing Wild Life」
...The deterioration through disease, especiallytuberculosis, that always is dreaded and often observed in closelyin-bred domestic cattle, has been totally absent...
William T. Hornaday 「Our Vanishing Wild Life」
...English dogs imported into India are so valuable that probably due care has been taken to prevent their crossing with native dogs; so that the deterioration cannot be thus accounted for...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The inertia is complete; nevertheless their appearance remains excellent, without a trace of the brownish tinge, the sign of deterioration...
J. Henri Fabre 「More Hunting Wasps」
...A general deterioration of antler size in the Barren Ground Caribouseems to constitute a case parallel with that of the European Red Deer(Cervus elaphus elaphus)...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...The house had then alreadyundergone much deterioration...
Henry S. Fitch 「Ecological Observations on the Woodrat, Neotoma floridana」
...The superiority of the Navajo to the Pueblo work results not onlyfrom a constant advance of the weaver's art among the former, butfrom a constant deterioration of it among the latter...
Washington Matthews 「Navajo weavers」
...As an example of the latter part of acontinual deterioration, it should be worse thananything preceding...
John W. Bradley 「Illuminated Manuscripts」
...Nor have the writers ofNaples ever ceased complaining of this neglect, and some indeed havebitterly inveighed against him and accused him ofcontributing to the deterioration of taste...
Luigi Antonio Lanzi Thomas Roscoe 「The History of Painting in Italy, Vol. 2 (of 6)」
...Pharisaism is not a deterioration of the good man; a considerable part of it is rather an essential condition of being good...
Friedrich Nietzsche Helen Zimmern 「Beyond Good and Evil」
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