... He can thus explain the rationale of the cure by his own art, and the ocular demonstration given is well appreciated... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...As elephants were but rarely seen in Europe prior to theseventeenth century, there were but few opportunities of correctingthe popular fallacy by ocular demonstration...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...These glands secrete an unctuous fluid, which is thrown out on theborder of the lids, the function of which is to facilitate their movements andenable them to retain the tears in the ocular cavity...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...These substances maypenetrate the eyeball, but more frequently they glide off and enter between theeye and the ocular sheath...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...General tone of upper parts grayish tawny; ocular stripe pale; skull, rostrum,nasals, and upper incisors shorter than in E...
John A. White 「The Baculum in the Chipmunks of Western North America」
...Such traditions, once established in abackwoods village, acquire an authority quite superior to fact andproof against much ocular refutation...
Charles G. D. Roberts 「The Watchers of the Trails」
...No geologist has ever had ocular proof that the vast rocks that compose ourCarboniferous or Jurassic or Cretaceous strata were really deposited in water...
Ernst Haeckel 「The Evolution of Man」
...A similar ocular deception is produced by the hall where acolonnade is represented, the intercolumniations of which make itappear much larger than it really is...
Luigi Antonio Lanzi Thomas Roscoe 「The History of Painting in Italy, Vol. 1 (of 6)」
...Its movements have been felt trembling along the far-reaching line ofour analysis, with a certainty hardly inferior to ocular demonstration...
Robert Stawell Ball 「The Story of the Heavens」
...Only, of course, the belief in their truth is necessary, as plausible belief and ocular evidence belonging to the perspective view of life...
Friedrich Nietzsche Helen Zimmern 「Beyond Good and Evil」
...The customary arrangement ofparts in such a telescope is shown in , where thepart marked O is called the objective and VE (the magnifyingglass) is the eyepiece, or ocular, as it is sometimescalled...
George C. Comstock 「A Text-Book of Astronomy」
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