of the month * 25 the day of the month when it is 

 due to hatch ; T indicates that the egg was tested 

 on the 5th or 6th day of incubation, and that it 

 contains a strong live germ, as shown in Fig. i, in 

 article on testing eggs ; L indicates that the egg 

 was tested again on the loth day ; and 4 that the 

 air space is about the same as shown in Fig. 4, in 

 article on testing eggs. A different figure would 

 indicate that the air space on loth day corres- 

 ponded with that shown by a Fig. of corresponding 

 number. 



FIG. 15. 



Fig. 15 shows the opposite side of Fig. 14. A 

 should correspond with the name of the party or 

 yard which furnished the eggs ; S indicates a thick 

 shell. If the letter T were substituted it would 

 indicate a thin shell. 



We have said in another place that the different 

 shells require different treatment to obtain the best 

 results. You will notice that while, as a rule, dark 

 shells are thicker than white ones, you will find 

 some thin shells among the dark ones and some 

 thick shells among the white ones. 

 29 



