[140 & 141]

Circumnutation of Leaf Strephium floribundum

(1/2 scale no lettering) Fig 169

(This is first dot to be larger than others: it has been here blotted

[141v]

 

91 782

Chap. E 10

entomophilous species would be less favoured. We see this in our forests of Coniferæ and other trees, such as oaks, beeches, birches, ashes &c; and in the Gramineæ, Cyperaceæ, and Juncaceæ, which clothe our meadows and swamps. As a large quantity of pollen is wasted by anemophilous plants, it is surprising that so many vigorous species of this kind abounding with individuals should still exist in any part of the world; as some insects exist everywhere. If they above anemophilous plants had been rendered entomophilous, their pollen would have been transported by means the aid of the senses and appetites of insects with incomparably greater safety than by the wind. That such a conversion is possible can hardly be doubted, from the remarks lately made on the existence of intermediate forms; and apparently it has been effected in the group of willows, as we may infer from the nature of their nearest allies.*(13) (*(13) H. Müller, Die Befruchtung &c p. 149) It seems at first sight a still more sur=