Journal of experimental zoology . Fcma 1 by Body Length. Cold. Warm 53 54 J5 56 57 5S 59 60 6. 6£ 63 64 65 66 67 66 69 7 O 7 , 72 73 74 75 76 77 78 Figure 16391 392 FRANCIS B. SUMNER readily, but he who wishes to examine them for this purposewill find differences between the corresponding sections oftwo different lots which are in some cases even greater thanthose between the contrasted sections of the same lot. Totake, for example, relative tail length (ratio of tail to body),we have for the males of warm-room parentage, in the C2, C3and C4 lots, , arid re
Journal of experimental zoology . Fcma 1 by Body Length. Cold. Warm 53 54 J5 56 57 5S 59 60 6. 6£ 63 64 65 66 67 66 69 7 O 7 , 72 73 74 75 76 77 78 Figure 16391 392 FRANCIS B. SUMNER readily, but he who wishes to examine them for this purposewill find differences between the corresponding sections oftwo different lots which are in some cases even greater thanthose between the contrasted sections of the same lot. Totake, for example, relative tail length (ratio of tail to body),we have for the males of warm-room parentage, in the C2, C3and C4 lots, , arid respectively.^ Thesedifferences are in some cases several times (in one instance14 times) their probable errors, so that, statistically speaking,they are fully as significant as any which we have met with. Furthermore, in graphs which are not here reproduced, Ihave compared tail, foot and ear measurements of the corre-sponding sections of these three lots of mice at the age of 50days (grouped according to weight). It is immediatel
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
