36 THE CANADIAN ENTOMOLOGIST 



science of Biology. Dr. Folsom, in meeting this want, by pre- 

 senting the subject primarily from a general biological standpoint,, 

 has created an interest for the average student which most text 

 books fail to do. 



I have long felt that the weakest point in our present system 

 of teaching Entomology has been in the undue importance placed 

 upon the memorization of multitudinous details. For the specialist 

 in Entomology the latter system is a necessity, but for the average 

 student, whose time is limited, the general principles of Entomology, 

 as outlined in Dr. Folsom's book, will give the best basis for private 

 study. Moreover, he will acquire an interest in this subject and 

 in the wider one of which Dr. Folsom shows it to be a part. For 

 instance, in his chapter on colour and coloration he has considered 

 his subject from a general standpoint, dealing first with the sources 

 of colour and then with the conditions which may cause variations 

 in the formation of colour in insects; so that with a knowledge of 

 the general principles, as designated by Dr. Folsom, the student is 

 encouraged to develop reason in lieu of memory. 



The new chapter on Transmission of Disease by Insects is a 

 valuable addition. This phase of Entomology is one which is 

 receiving a great deal of attention at the present time, and Dr. 

 Folsom has presented the results of modern research in a concise 

 and interesting manner. 



The illustrations throughout are particularly fine and ap- 

 propriate to the text. 



The former comprehensive bibliography has been augmented 

 by the titles of one hundred new works and will be found very 

 useful to the student of Entomology. 



Tennyson D. Jarvis. 



Mailed January 14th, 1914. 



