cl GENERAL SUMMARY OF SCIENTIFIC AND 



IV. The Australian Region, embracing the sub-regions of (1) Austro- 

 Malaya, (2) Australia, (3) Polynesia, and (4) New Zealand. 



V. The Neotropical Region, including the sub-regions of (1) Chili 

 (or S. Temp. Am.), (2) Brazil, (3) Mexico (or Trop. N. Am.), and (4) 

 Antilles. 



VI. The Nearctic Region, with the sub-regions (1) California, (2) 

 Rocky Mountains, (3) Alleghanies (or Eastern U. S.), and (4) Canada. 



This is not the place to further comment upon Mr. Wallace's views. 

 Suffice it to say that, although there are many errors, the work is 

 one of sterling value ; and will doubtless give a decided impetus to 

 the philosophical consideration of the phenomena of the distribution 

 of animal life over the earth, and its causes. 



