Facts and Implications of Orthogenesis 405 



Osborn points out that the Neanderthal race (see page 195) 

 probably lived in a semi-tropical region. This is inferred 

 from the association of the skeletal remains and stone im- 

 plements with fossils of elephant, rhinoceros, hippopotamus 



360 



320 



280 



240 



a 



360 



320 



w 



240 



200 



200 



160 



(60 



PJ 



60 



120 



40 



Classes i;|ii 



i 



40 



Hi;; 



Varices 383 55 



64 



203 



MISCEL 



Classes- 



Hlii 



200tot4905;^*^»''**'^^3'^ 5^ 



60 



r:i:-: 



396 



MISCEI 



|04tofal905' 



Fig. 1 01. Determinate Variation in Wing Pattern 



The four most frequent types of wing pattern in the California flower beetle, Dia- 

 brotica soror, were recorded from year to year. In 1895, 383 out of a total of 90 j 

 (42.3%) had the six dots distinct on each wing; and 203 (22,4%) had the middle 

 dots on each wing run together crosswise. Six years later there were 313 beetles of 

 the first pattern, or 34.6%; and 396 of the second type, an increase to 43.7%. This 

 shift in the proportions of the various patterns continued over a period of ten years. 

 After Kellogg and Bell, from Jordan and Kellogg, Evolution and Animal Life, pub- 

 lished by D. Appleton & Company. 



and other such animals. The available facts point to life in 

 fertile river bottoms, where the vegetation was luxuriant 

 and game and food abundant for man. Under these cir- 

 cumstances the struggle for existence must have been rela- 

 tively easy, and there " was no pressure for the selection of 



