342 Dr. F. N. White. Variations in Sex Ratio o/Mus rattus 



Table IV. — Coimbatore. 



Weight in grins. 



January to March. 



April to June. 



July to September. 



3 



? 



3 



? 



3 



¥ 



11-20 





29 



27 



33 



44 



30 



35 



21-30 





49 



47 



78 



86 



119 



114 



-40 





62 



43 



50 



51 



72 



74 



-50 





45 



45 



66 



49 



87 



64 



-60 





32 



33 



48 



48 



76 



78 



-70 





15 



31 



30 



34 



72 



71 



-80 





18 



30 



29 



49 



52 



66 



-90 





14 



30 



33 



60 



58 



72 



-100 





11 



36 



51 



63 



46 



94 



-110 





13 



23 



21 



57 



33 



80 



-120 





14 



32 



31 



59 



52 



83 



-130 





18 



16 



21 



29 



40 



56 



-140 





9 



11 



23 



15 



37 



38 



-150 





11 



7 



16 



14 



20 



27 



-160 





6 



2 



18 



11 



28 



9 



-170 





6 



2 



15 



7 



27 



10 



-180 





6 







9 



o 



15 



5 



-190 





1 



1 



A 



4 



1 



y 



J. 



-200 





1 





1 



1 



3 



1 



-210 





1 









2 





-220 





1 















-230 

















-240 

















-250 

















Totals .| 



362 



416 



577 



678 



878 



978 





778 



1255 



1856 



Table V. — Ballia. — Consecutive rats cangbt between January 23 and 



October 6, 1911. 

 M. rattus. 



Weight in gnns. 



3 



? 



Weight in grms. 



3 



? 



11-20 



102 



82 



160 



74 



142 



21-30 



182 



171 



170 



67 



89 



-40 



147 



139 



180 



49 



51 



-50 



127 



135 



190 



51 



34 



-60 



98 



116 



200 



58 



23 



-70 



127 



109 



210 



34 



9 



-80 



110 



113 



220 



21 



1 



-90 



100 



134 



230 



4 



2 



-100 



127 



155 



240 



1 







-110 



89 



168 



250 











-120 



128 



222 



260 











-130 



102 



248 



270 











-140 



103 



224 



280 







1 



-150 



74 



182 









