EVOLUTION OF MAN 163 



tion in the colors of petals, the colors of degenerate 

 blossoms, and many other subjects of much interest; but, 

 as the conclusions to be drawn from the great number 

 of observations are still somewhat in dispute, it seems 

 unwise for us to attempt further discussion along these 

 lines. 1 



There is one further thing in this connection to which 

 it is well to call attention. Many highly specialized flowers 

 have developed unusual shapes so as to cause the visiting 

 insects to enter the blossoms by the path most likely to bring 

 them into contact with the pistil and the pollen in such a 

 way as to insure cross-fertilization, and have provided 

 special lighting spots or platforms for their visitors (Plate 

 90, C\ compare Plate 89), and these are often spotted and 

 streaked in such a way as to make them conspicuous. More 

 interesting still is the fact that these streaks are usually so 

 arranged as to point the way to the nectaries, guiding the 

 insect along the right path, the pistil and the anthers being 

 so placed as to come into contact with the body of the insect 

 in the most advantageous manner as it passes along this 

 prescribed way. 



MAN IN RELATION TO EVOLUTION 



Naturally the subject of the relation of humankind to 

 evolution is one of particular interest to us. Study of 

 human anatomy shows mankind to be probably a single 

 species, belonging to the Primates, a group of the Mam- 

 malia, including, besides man, the lemurs, and the apes and 



1 The reader will find Grant Allen's TJie Colours of Flmuers. which treats of 

 these subjects, a most interesting and suggestive book. 



