 | Charles Birch, John B. Cobb - 1985 - 372 páginas
...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....of humble-bees in any district depends in a great degree on the number of field-mice, which destroy their combs and nests; and Mr H. Newman, who has... | |
 | Charles Darwin - 1996 - 382 páginas
...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....of humble-bees in any district depends in a great degree on the number of field-mice, which destroy their combs and nests; and Mr. H. Newman, who has... | |
 | William H. Calvin - 1998 - 266 páginas
...last interglacial," Nature 342:539-542 (30 November 1989). 25 DARWIN (1859) writes in Chapter III: The number of humble-bees in any district depends in a great measure upon the number of field-mice, which destroy their combs and nests; and Col. Newman, who has long attended... | |
 | Robert Jervis - 1998 - 328 páginas
...... as other bees cannot reach the nectar. . . . The number of humble-bees in any district depends in great measure on the number of fieldmice, which destroy their combs and nests. . . . Now the number of mice is largely dependent, as everyone knows, on the number of cats. . . .... | |
 | Pascal Acot - 1998 - 458 páginas
...became 74 MUTUAL CHECKS TO INCREASE. CIIAP. III. extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear....of humble-bees in any district depends in a great degree on the number of field-mice, which destroy their combs and nests ; and Mr. H. Newman, who has... | |
 | Charles Darwin - 2003 - 676 páginas
...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....of humble-bees in any district depends in a great degree on the number of field-mice, which destroy their combs and nests; and Mr. H. Newman, who has... | |
 | Jan Lin, Christopher Mele - 2005 - 392 páginas
...heartsease and red clover would become very rare, or wholly disappear. However, the number of bumblebees in any district depends in a great measure on the number of field mice, which destroy their combs and nests. It is estimated that more than two-thirds of them... | |
 | Charles Darwin - 2008 - 166 páginas
...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....of humble-bees in any district depends in a great degree on the number of field-mice, which destroy their combs and nests; and Mr. H. Newman, who has... | |
 | 1905 - 860 páginas
...that if the whole genus of humble-bee became extinct or very rare in England, the heartsease and red clover would become very rare or wholly disappear....district depends in a great measure on the number of field once, which destroy their combs and neats Now the number of mice is largely dependent, as every... | |
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Now the number of. mice is largely dependent, as every one knows, on the number of cats; and Col. 
