 | 1921 - 472 페이지
...; . . . fbut] humble-bees alone visit the red clover, as other bees cannot reach the nectar. . . . Hence we may infer as highly probable that if the...or very rare in England, the heart's-ease and red clovec would become very rare or wholly disappear. The number of humble-bees in any district depends^... | |
 | 1860 - 564 페이지
...visit the common red clover, as other bees cannot reach the nectar. Hence I have very little doubt that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear. The number of humble-bees in... | |
 | Charles Dickens - 1860 - 638 페이지
...but humble-bees alone visit the red clover, as other bees cannot reach the nectar. Hence he concludes that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholiy disappear. The number of humblebees in... | |
 | Nicholas Patrick Wiseman - 1860 - 594 페이지
...clover (Trifolium pratense), as other bees cannot reach the nectar. Hence I have very little doubt, that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear. The number of humble-bees in... | |
 | 1860 - 894 페이지
...clover ( Trifolium Pratense.), as other bees cannot reach the nectar. Hence I have very little doubt, that if the whole genus of humble-bees became extinct or very rare in England, tho heartsease and red clover would become very rare, or wholly disappear. Tho number of humble-bees... | |
 | 1867 - 378 페이지
...case of the red clover, from' their weight being apparently not sufficient to depress the wing-petals. Hence we may infer as> highly probable, that if the whole genus of hnmble-bees became extinct or very rare in England, the hearts-ease and red clover would become very... | |
 | Charles Darwin - 1864 - 472 페이지
...Humble-bees alone visit red clover, as other bees cannot reach the nectar. Hence I have very little doubt, that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear. The number of humble bees in... | |
 | Charles Darwin - 1866 - 668 페이지
...case of the red clover, from their weight being apparently not sufficient to depress the wing-petals. Hence we may infer as highly probable that, if the...humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear. The number of humble-bees in... | |
 | Robert Bird - 1870 - 262 페이지
...case of the red clover, from their weight being apparently not sufficient to depress the wing petals. Hence we may infer as highly probable that if the whole genus of humble-bees become extinct or very rare in England, the heart's-ease and red clover would become very rare, or... | |
 | Bath Natural History and Antiquarian Field Club (Bath, England) - 1873 - 536 페이지
...heartsease and red clover, which are fertilised by humble-bees. He says he has " very little doubt that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear." He then goes on to remark that... | |
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Hence we may infer as highly probable that, if the whole genus of humblebees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear. 
