xxiv PREFACE 



National Museum have also furnished numerous illustra- 

 tions, as well as the specimens of live animals from Brit- 

 ish East Africa donated by William N. McMillan to the 

 National Zoological Park. For the photographs of the 

 McMillan mammals we are indebted to Mr. A. B. Baker, 

 the assistant superintendent of the park. The Field Mu- 

 seum of Chicago has supplied the photographs of the un- 

 rivalled groups of Somali mammals mounted by Carl E. 

 Akeley in that institution. To all of these the writers wish 

 to acknowledge their indebtedness. 



Theodore Roosevelt, 

 Edmund Heller. 



New York, October i, 191 3. 



