This book is written to aid and inform beginners 

 who know little or nothing of artificial incubation 

 and brooding ; to assist those who have learned 

 something about it and wish to know more ; and 

 to supply a handy reference for those who know it 

 all. 



As originally written, it would have made a 

 volume three times as large as the present one, but 

 the people of to-day want everything boiled down, 

 concentrated, concise, convenient. A tiiple ex- 

 tract contains all the perfume and vital qualities of 

 three times its bulk of plain tincture ; so we have 

 rewritten it, carefully eliminating all superfluous 

 matter, and placing the gist of it before our readers 

 in a compact form, convenient for the desk and 

 not too cumbersome for a good-sized pocket. In- 

 stead of using a thick, porous paper, which would 

 increase the bulk fourfold, we have chosen a heavy, 

 superior plate paper and new type, believing that 

 our readers would prefer elegance to unnecessary 

 bulk. 



