GENESIS OF MAN. 19 



meaning which each naturalist may happen to attach to these terms. 

 He may class them all under one genus with three species, or under 

 three genera with twenty-one species, or under twenty-one genera 

 with in species, or under thirty-nine genera with 289 species, or 

 even under 113 genera with 591 species, according as his concep- 

 tion of genera and species be wide or narrow. In fact, the 591 dif- 

 ferent forms may be so arranged in a genealogical tree that the 

 ancestry of the entire group can be traced back to one common 

 form from which all the rest must have descended, undergoing the 

 modifications induced by the varying conditions of their existence. 

 This common ancestor Haeckel believes to be the Olynthus. 



Thus, the long respected and miraculously created bona species 

 is histologically demonstrated a myth. 



Rising from the special towards the general, the Generclle 

 Morphologic may be next named. It was the first systematic 

 attempt to establish the theory of development from the or- 

 ganized facts of comparative anatomy. But the most popular, in its 

 subject matter and style, of the works of Professor Haekel is his 

 Natiirliche Scliopfungsgeschichte , consistiong of a course of lectures 

 upon the questions in general opened by the Origin of Species, 

 but containing the advanced views of the author, already re- 

 ferred to. This work is, therefore, of the highest interest to the 

 general public, and cannot be too strongly recommended. It is 

 divided into five parts designated by the author with the following 

 titles, respectively, each of which sufficiently characterizes its con- 

 tents : 1, Historical Part; 2, Darwinistic Part; 3, Cosmogenetic 

 Part; 4, Phylogenetic Part ; and 5, Anthropogenetic Part. 



His Anthropogeny or History of the Development of Man, to 

 which we will now confine our attention more closely, is simply an 

 enlargement and expansion of the last part of the History of Crea- 

 tion. The greatness of the theme required this, and no one who 

 carefully follows the author through this work will complain that 

 justice has not been done the subject. As may well be imagined 

 this work covers the most interesting field of investigation and in- 

 troduces the reader into the most mysterious penetralia of nature. 

 The charm of its diction, the fullness of its illustrations, and above 

 all the perpetual wonderland through which it leads, entitle it to 

 take rank at once among the most instructive and the most fasci- 

 nating works to which modern science has ever yet given birth. 



