...Enquiry into the Validity of the BritishClaim to a Right of Visitation and Search of American Vesselssuspected to be engaged in the African Slave-Trade...
W. E. B. Du Bois 「The Suppression of the African Slave Trade to the United States of America」
...This is apparently one of the most important protectivedevices to be found in Nature and the validity of it is nowgenerally conceded by naturalists...
Clarence M. Weed 「Butterflies Worth Knowing」
...The whole subject of the validity of warning colorationhas recently been brought up for reconsideration by the illuminatinginvestigations of Mr...
Clarence M. Weed 「Butterflies Worth Knowing」
...There has, however, recently been a reactionamong naturalists in regard to the validity of many supposedexamples of warning coloration and the whole subjectis still open to careful investigation...
Clarence M. Weed 「Butterflies Worth Knowing」
...Sympatricoccurrence serves as an indicator of specific distinctness and is one ofthe more practical tests of species validity when cross-breedingexperiments are not possible...
John D. Lynch 「A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope」
...Because of these results, Williamsquestioned the validity of the assumption that P...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...A careful review of these snakes is needed to verify the validity of the characters used to separate the subspecies and to determine areas of intergradation...
William E. Duellman 「Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala」
...Stuart, who will discuss the variation in, and the validity of, thenamed populations of valliceps...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...When one comes to French art it is stillmore difficult for us to realize that the ideas underlying itsexpression are ideas of import, validity, and attachment...
W. C. Brownell 「French Art」
...Waite has so generously admitted the validity ofmy answer to his criticism as regards meteors, I can do noless than admit that he scored one against me in his secondargument...
Various 「Astounding Stories, May, 1931」
...Thistheory received almost universal acceptance, Jim Carpenter alone of themore prominent men of learning refusing to admit the validity of it...
Various 「Astounding Stories of Super-Science July 1930」
...Hequestions the validity of his argument that bodies of greater size andbrightness should not serve the smaller, though not bright, and thatheaven should move, while the Earth remained at rest...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...So long as the manner in which the planets came into beingcontinues an open question, conclusions about their timeof birth must remain of doubtful validity...
George C. Comstock 「A Text-Book of Astronomy」
...But in the proof of this greattheorem two influences were neglected, either of which isfatal to its validity...
George C. Comstock 「A Text-Book of Astronomy」
...The nature and validity ofthe conclusions to be drawn can be best appreciated by a statement ofsome features of this tendency of the stars to crowd towards thegalactic circle...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
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