58 THE FERTILISATION OF FLOWERS. [CHAP. Ill. 
Even the streaks of colour and the hairs on the 
petals of flowers are found to have reference to the 
visits of insects; and, in fact, viewed in the light 
of recent researches, everything in connection with 
flowers has an interest; and it is with the greatest 
reluctance that we must now leave this part of our 
subject. 
