

PRODUCE INFERTILE EGGS * * 

 PREVENT LOSS FROM BAD EGGS 



IT IS ALSO ESTIMATED THAT $15,000,000 OF 



THIS LOSS IS DUE TO BLOOD RINGS. 

 Every dollar of ihjl loss from blood ring* it directly prevent JJe 



Blood ring* are a certain stage of cKick development in the ct;g. 



Heat develop? the germ until il becomes H btood ring. (St-r 

 Figure* 4, 6. and 6.) 



Blood ring* often develop in the nest and in an unrated room in 

 the house during the hot ttimmer wither. (See F.;;ur<- 6 4,(>.iud ft.) 



Blood rings can not be produced >n the mfeitii>- r^jr. 



Blood rin^s are Uoublome only in hot wt-Athn. 



Infertile eggt are eggs Iwd by hem that are tl allowed to run 

 with a male bird. (See Rufc 5. below.) 



A --lady nf try-.- |*-lu>cs should quickly awviucr onr that tli" 

 inli-rtilr. rtfg i% ibe q'aaiilv r^ thncfore. produ it, bv ..v>rij; the 

 ml bu,l- fr.,n, the ll.^.L an. I \ea\uc m,ne nmiwfor b,-ll,-, ,-,-. Tl,-- 

 icnwtil nl the nwle birdt has obn.lul.-K- rm'mlW-e on ik- r t; . 







Fertile and infertile eggs. 



