1921.] Size of Egg in Relation to Average Production. 67 



and were from stock which had been reared for several 

 generations for high nuraerical production. It was expected, 

 therefore, that a tendency to lay small eggs would be noticed. 



Table I gives the percentage of production in each period 

 of four weeks. An egg per day per pullet is reckoned as 

 100 per cent, production, and an egg every alternate day 50 per 

 cent. Table II shows the percentages of first grade egga 

 (2 oz. and over) and of second grade eggs (all eggs under 

 2 oz. during the first sixteen weeks aud under 2oz., but not 

 less than IJoz., thereafter). 





Table 



1. Perrrn 



taije^ <if Pro 



hiction. 







Periods. 





Ltijitoriis. 



R.L Reds. 



Phjinoutk 

 Rocks. 



1. 



Nov. 8—3(1 



16-4 



12-9 



12-4 



r,-2 



2. 



Dec. 1 —28 



27-6 



28-9 



21-2 



21-1 



3. 



Dec. 29— Jaii. 25 ... 



49-7 



f.8-4 



55-8 



49-4 



4. 



.Ian. 20— Feb. 22 ... 



64-1 



47-2 



08 -5 



49-5 



o. 



Feb. 23— Mav; 22 .. 



86-7 



HO -9 



62-9 



61 



6. 



Mar. 23-Apl. 19 ... 



75-0 



73-2 



79-8 



72-5 



7. 



Apl. 20— May 17 ... 



72-5 



76-3 



79-2 



09-0 



8. 



Mav 18— Jun. U ... 



58-8 



71-3 



03 -8 





9. 



Jim. 15— Jul. 12 ... 



.56-8 



0(3-8 



60-9 



r)0-8 



10. 



Jul. 13— Aug. 9 



51-1 



59-0 



03-0 



49-5 



11. 



Aug. 10 — Sep. 6 

 Sep. 7— Oct. 4 



48-7 



51-9 



53-2 



49-8 



12. 



48-7 



34-4 



49-2 



46-4 



13. 



Oct. o— Nov. 2. 



51-3 



37 T) 



43-9 



24-4 



Table IF. —Pt^rcentcKjes of First (irade (A) and 



Second Grade 



(B) E,j<is. 





Periods. 





adottes. 



Lerjlioriis. 



R.I. Reds. 



Phjiiioatk 

 Rocks. 







A. 



B. 



A. 



P>. 



A. 



B. 



A. 



B. 





Nov. 3—30 



41 



59 



22 



88 



45 



55 



00 



34 



2. 



Dec. 1—28 



02 



38 



57 



43 



72 



28 



r>i 



39 



3. 



Dec. 29— Jan. 25 ... 



75 



25 



79 



21 



90 



10 



75 



25 



4. 



Jan. 20— Feb. 22 ... 



78 



25 



77 



23 



90 



10 



71 



29 





Feb. 23- Mar. 22 ... 



S2 



18 



84 



10 



91 



9 



73 



27 



0. 



Mar. 23— Apl. 19 ... 



75 



24 



85 



13 



91 



\) 



77 



23 



7. 



Apl. 20— May 17 .. 



77 



23 



83 



17 



91 



9 



73 



27 



8. 



May 18 — Jun. 14 ... 



73 



27 



73 



27 



Sf, 



14 



73 



27 



9. 



Juu. 15— Jul. 12 ... 



81 



19 



SI 



1!> 



90 



10 



79 



21 



10. 



Jul. 13— Aug. 9 



79 



21 



7<; 



24 



Sit 



14 



71 



29 



11. 



Aug. 10— Sep. 



SC) 



14 



82 



IS 



S8 



12 



70 



2-1 



12. 



Sep. 7— Oct. 4 



85 



15 



88 



12 



91 



!> 



SO 



20 



13. 



Oct. .5— Nov. 2 



87 



13 



09 



31 



S2 



18 



80 



14 



The accompanying graphs indicate the relation between size 

 of egg and production in the thirteen periods of the year. 



Selecting the 33 pens of Wyandottes for further study, 

 remarkable variations are apparent in each period. The figures 

 for these pens are given in Table III below. Two of the ])ens 

 laid only second grade eggs during the first four weeks. In 

 one pen the eggs steadily increased in size with the exception 

 of two recessions, and in the last recorded period (the twelfth) 

 produced 00 per cent, of first grade eggs; th(^ othe?- ])en v;iried 



E 2 



