ACCURACY IN COMMERCIAL GRADING OF OPENED EGGS. 



bored bacteria. Of the 2,052 eggs included in the 29 samples, 13.5 

 per cent, as computed from Table II, were found to contain more 

 than 100 organisms per cc. The remaining 86.5 per cent contained 

 less than 100 organisms per cc, that is, they were practically sterile. 

 Only 3.3 per cent contained over 500,000 organisms per cc. The 

 percentage of eggs containing B. coli (2.8 per cent) was considerably 

 less than the total percentage of the eggs containing bacteria. 



A very large percentage of the eggs comprising sample No. 41192 

 had both dirty and cracked shells. These eggs were laid m July 

 when the weather was very hot. It is highly probable that bacterial 

 penetration and development took place between the time of first 

 assortment in the producing section and final receipt in the con- 

 summg center, as an interval of 10 days occurred between the date 

 of shipping and that of grading in the commission house, during' 

 a portion of which period the eggs were without refrigeration. Had 

 these eggs been utilized promptly in the first concentrating center, 

 there is Httle doubt that only a few of them would have been found 

 to contain bacteria. The results obtained in the case of these eggs 

 show the importance of having eggs with defective shells opened 

 as near the source of production as possible. 



Table II. — Variation in bacterial content of samples of individual eggs candled as good. 





Date of 

 exami- 

 nation. 



Num- 

 ber 

 of 



eggs. 



Number of bacteria per cc. 



Sam- 

 ple 



No 



to 100. 



101 to 1,000. 



1,001 to 

 10,000. 



10,001 to 

 50,000. 



50,001 to 

 100,000. 



100,001 to 

 500,000. 



Over 

 500,000. 





No. 



of 



eggs. 



P.ct. 



No. 



of 



eggs. 



P.ct. 



No. 

 of 



eggs. 



P.ct. 



No. 



of 



eggs. 



P.ct. 



No. 

 of 



eggs. 



P.ct. 



No. 



of 



eggs. 



P.ct. 



No. 



of 



eggs. 



P.ct. 



41142 



1913. 

 May 23 

 May 27 

 May 29 

 June 3 

 June 10 

 June 12 

 June 17 

 June 19 

 June 20 

 June 24 

 June 26 

 June 27 

 July 10 

 July 16 

 July 21 

 July 22 

 July 23 

 July 25 

 July 29 

 Aug. 18 

 Sept. 10 

 Sept. 11 

 Sept. 19 

 Sept. 25 

 Sept. 26 

 Oct. 3 

 Oct. 15 

 Oct. 17 

 Oct. 27 



72 

 72 

 72 

 70 

 71 

 70 

 72 

 70 

 72 

 69 

 72 

 71 

 70 

 69 

 70 

 70 

 71 

 72 

 66 

 70 

 70 

 71 

 72 

 72 

 71 

 72 

 71 

 72 

 70 



71 

 72 

 69 

 70 

 67 

 67 

 71 

 54 

 69 

 67 

 71 

 67 

 61 

 66 

 57 

 64 

 67 

 66 



98. 6 

 100.0 

 95.8 

 100.0 

 94.4 

 95.7 

 98.6 

 77.1 

 95.9 

 97.1 

 98.6 

 94.4 

 87.1 

 95.7 

 81.4 

 91.4 

 94.4 

 91.7 



1 



1.4 























41143 



1 

















41144 







2 



2.8 















1 



1.4 



41145 





















41146 



1 



2 



1.4 

 2.9 



1 



1.4 















2 

 1 



1 

 6 

 1 

 1 

 1 

 4 

 2 

 2 

 5 



2.8 



41147 















1.4 



41148 















1 



1.4 



41149 



5 



7.1 



2 



2:9 











3 



4.3 



8 fi 



41161 



1 



1.4 



1 



1.4 



1.4 



41164 



1 



1.5 











.1.5 



41167 



















1.4 



41169 























5 6 



41175 



3 



1 

 7 

 3 

 2 

 1 

 4 

 3 

 1 

 2 

 1 

 1 

 2 

 7 

 4 

 13 

 11 



4.3 

 1.4 



10.0 

 4.3 

 2.8 

 1.4 

 6.1 

 4.3 

 1.4 

 2.8 

 1.4 

 1.4 

 2.8 

 9.7 

 5.6 

 18.1 

 15.7 



1 



1.4 



3 



4.3 











? 9 



41178 











?. 9 



41180 







1 

 1 



i.4 

 1.4 











7 1 



41182 



1 

 1 



1.4 

 1.4 



1 



1.4 









41185 







1 

 3 

 7 

 2 

 

 4 

 6 

 3 

 3 



1 4 



41189 











2 

 21 



2.8 

 31.8 



4 ?, 



41192 



11 

 2 

 1 



16.6 



2.8 

 1.4 



14 



21.2 



9 



13.6 



in 6 



41316 



63 

 62 

 64 

 63 

 64 

 66 

 63 

 63 

 56 

 14 



90.0 

 88.6 

 90.1 

 87.5 

 88.9 

 93.0 

 87.5 

 88.7 

 77.8 

 20.0 



2 9 



41435 



1 



1.4 











7 1 



41438 







1 



1.4 



5 6 



41505 







1 



2 



1.4 



2.8 



1 

 1 



1.4 

 1.4 



8 3 



41506 



1 



1.4 







4 2 



41509 







4 ?, 



41551 



2 



2.8 

















41594 







1 



1.4 







3 



4 2 



41598 



1 

 19 



1.4 

 27.1 



1 

 11 



1.4 

 15.7 



1 

 4 



1.4 

 5.7 





41645 



6 



8.5 



5 



7.1 



Total . . 





2,052 



1,774 



86.5 



76 



3.7 



45 



2.2 



36 



1.7 



20 



1.0 



32 



1.5 



69 



3.4 







