REQUISITES OF A GOOD INCUBATOR. 



and who has written the best book on incubation extant, 

 stands up boldly and says there is but one style of regu- 

 lator that will do perfect work and that is not on his 

 own machine or any other, because it is too expensive, 

 since it costs more than all the rest of a machine. 



In regard to changes in the contents of the egg dur- 

 ing incubation, one expert says none of the yolk is used 

 to nourish the embryo till at or near the time when the 

 former is drawn bodily into the latter during the latest 

 stages of hatching, and another expert claims that while 

 the % white principally forms the chick, yet portions of 

 the yolk enter from day to day into the white to replen- 

 ish its diminishing substance and are afterwards used 

 for the growth of the embryo. 



As concerns the care of the incubator in general, 

 many dealers represent that it is so easily managed that 

 "a child can run it" successfully; while others insist 

 that no hatching machine will succeed without consider- 

 able care and skill. 



"When we pass from the topic of hatching to rearing, 

 some insist that not over 20 or 30 chicks should be put 

 in one brooder ; while on the other hand dealers are 

 plenty who, to induce an expenditure of $10 to $20 or 

 upwards for one of their death traps, represent that it 

 will accommodate 50 to 75 or 100 chicks, and in some 

 cases the figures are 200 or more to a brood. One, after 

 wrestling for several years with bringing up chickens by 

 hand, insists that top heat only in brooding is the thing. 

 Another, after an equally extended experience and bury- 

 ing by the bushel chicks trampled to death, shuns top 

 heat with the greatest persistence. Still another, after 

 an experience of half an ordinary lifetime, uses top and 

 bottom heat combined, while a fourth, grown gray in 

 experiment in various localities from the Atlantic to 

 the Pacific, says: "Side heat is as the hen, give me 

 that and that alone." 



