f 



1905.] Artificial Incubation. 91 



percentages, as only these have the possibility of producing 

 chickens or ducklings. It may be explained that the incu- 

 bators are worked by students, who are required to keep careful 

 records of the variations and results, during the various courses 

 as part of their instruction, under the direction of the practical 

 instructors. 



Table II.— Hatching Records. 



Date of 

 Hatching. 



Class of 

 Machine. 



No. of Eggs. 



No. of 

 Fertile Ecss 

 7th day. 



No. of 

 Chickens 

 Hatched. 



Fertile 

 Eggs 

 Hatched. 



1904. 











Percentage. 



April 



5 ... 



B 



t An 

 1 uy 



T T "7 

 1 1 Z 



93 







12 ... 



A 





°7 



6? 



71 "?n 

 /1 zu 





12 ... 





126 





7/1 



/4 



67*80 





15 ... 



C 



I 20 



IO4 



w 4 







18 ... 



B 



T(T3 

 1U J 



86 



66 



76*7/1 

 /4 



» 



18 ... 



B 



IOO 



9- 



c> 



C6" C2 



J3 



21 .. 



c 



224 



192 



i^8 



71*87 



55 



25 ... 



C 



224 



182 



T 37 



7 e >27 



') 



29 ... 



C 



.54 



4^ 



3T 



?8 





May 



5 - 



A 



fi/t 

 94 



82 





70'73 

 /V /J 





5 - 



c 



III 



8o 



68 



76 '4 

 / w 4 



j » 



17 ... 



c 



220 



202 



T 3Q 



68 -8 1 



J5 



19 ... 



A 



QT 



~8zl 



"4 



71 



84.' C2 



5 J 



19 ... 



c 



212 



l8o 



TD7 



5V 44 



J5 



26 ... 



B 



4° 



■5*7 



j7 



">7 



1 z 9/ 



5' 



26 ... 





r /i 



& 



/I c 



5 Z 



7T* T T 



>> 



30 ... 



c 





el 



4^ 



74' IQ 



/4 A 7 



June 



2 ... 



A 



3D 



22 



18 



8l-82 





I ••• 



Q 



/17 



4/ 



/in 



■3'? 

 J- 



80 -o 



» 



0 ... 



B 



40 



20 



T "J 



65*0 



5 > 



10 ... 



B 



3<~» 



•2 T 



22 



70"Q7 



> 5 



11 ... 



A 



SO 



7 r 



CO 



83-1 





18 ... 



B 



4- 



36 



26 



72*22 



Aug. 



1 ... 





54 



r t 



/I T 



4 1 



8o-3Q 





1 ... 



B 



36 



24 

 ^4 



18 







2 ... 



C 



23 



20 



16 



80 -o 





4 ... 



A 



97 



88 



79 



89-77 





29 ... 



C 



2 5 



28 



22 



78-57 





31 ... 



A 



64 



56 



42 



75-0 



Sept. 



2 ... 



B 



79 



62 



38 



61-29 



19 ... 



C 



IOO 





69 



71-87 



)) 



20 ... 



C 



54 



48 



4o 



83-33 





26 ... 



c 



53 



45 



38 



84-44 





27 ... 



A 



90 



88 



I 9 



8977 



Oct. 



1 ... 



C 



82 



62 



60 



96-77 





11 ... 



B 



82 



£ 3 



61 



96-82 





15 ... 



C 



83 



69 



56 



8ri6 





15 ... 



C 



54 



46 



33 



7174 





20 ... 



C 



48 



4i 



3i 



75-61 





24 ... 



A 



82 



5f 



56 



96*55 



Nov. 



6 ... 



B 



S l 



38 



28 



73-68 





13 ... 



C 



56 



5i 



43 



84-31 



> > 



22 ... 



A 



30 



23 



19 



82-61 





22 ... 



C 



3i 



24 



21 



87-5 



Dec. 



13 ... 



C 





43 



3 l 



86-05 



>) 



19 ... 



A 



g 



34 



26 



76-47 



