...to the fertilisation of the heartsease ( Viola tricolor), for other bees do not visit this flower. ƽ fertilisation of some kinds of clover : for instance, twenty heads of Dutch clover ( Trifolium repens)...

...of irony ? Where ? CATS, MICE, BEES, AND FLOWERS I am tempted to give one more instance showing how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations. I shall hereafter have occasion to show that the exotic Lobelia fulgens is never visited in my garden...

...invent laws on the duration of the forms of life ! I am tempted to give one more instance showing how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations. I shall hereafter have occasion to show that the exotic Lobelia fulgens is never visited in my garden...

...and it should never be regarded as more than a particularly clear illustration of a general fact. " Plants and animals, remote in the scale of nature,...together by a web of complex relations. ... I have found, from experiments, that humble-bees are almost indispensable to the fertilisation of the heart's-ease...

...Other Organisms Charles Darwin in " The Origin of Species " has used the bumblebee to illustrate " how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations." He found " that the visits of bees are necessary for the fertilization of some kinds of clover; for...

...succession of cause and effect in Darwin's famous illustration of the way in which "animals and plants, remote in the scale of nature, are bound together by a web of complex relations." You will remember that with the increase of cats there went a decrease of field mice ; this meant an...

...examine Darwin's own account of this case. He says : " I am tempted to give one more instance showing how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations." (Follow examples of the absolute dependence of some plants upon insect fertilisation, as that of Lobelia...

...and it should never be regarded as more than a particularly clear illustration of a general fact. " Plants and animals, remote in the scale of nature,...bound together by a web of complex relations I have found, from experiments, that humble-bees are almost indispensable to the fertilisation of the heart'sease...

...invent laws on the duration of the forms of life! I am tempted to give one more instance showing how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations. I shall hereafter have occasion to show that the exotic Lobelia fulgens is never visited in my 'garden...

...lice. The famous example, cited by Darwin in the third chapter of The Origin of Species, "showing how plants and animals, remote in the scale of nature,...are bound together by a web of complex relations," will, names changed, ultimately be true for many more insects than the humble bees of which it was...