Journal of experimental zoology . us lots.^- Such a generaltrend is clearly indicated in figure 17 which is based upon thethree C broods, combined and divided into size-groups.^^The relations between the two contrasted series are essen-tially the same as were previously indicated by the C2 and C4lots, taken separately, and, for one character by the C3 do not wish, however, to lay too much stress upon such acomposite picture. ^^ It is, of course, not strictly true that they were born of the same parents,since only part of the Bi lot became parents on each occasion, and the indi-viduals di
Journal of experimental zoology . us lots.^- Such a generaltrend is clearly indicated in figure 17 which is based upon thethree C broods, combined and divided into size-groups.^^The relations between the two contrasted series are essen-tially the same as were previously indicated by the C2 and C4lots, taken separately, and, for one character by the C3 do not wish, however, to lay too much stress upon such acomposite picture. ^^ It is, of course, not strictly true that they were born of the same parents,since only part of the Bi lot became parents on each occasion, and the indi-viduals differed in the different cases. This point will be referred to again. 2 This procedure would be unjustifiable unless the proportion of warmand cold individuals were about the same in all three lots. ^ It has been necessary to use weight groups in the present case, in order toinclude the C3 lot for which body length was not determined until later in life. Avera ; C3 and C4 Lot5. 50 DaysGrouped by W6i<^h-|- Males. II 1^13 \h 17 ?a<^ Figure 17394 INFLUENCE, HEREDITY, CORRELATION, GROWTH 395 A more reliable expression of the mean tendency of all theFi lots, including that of 1909, will be given below. 8. The 1909 series This has already been discussed in three previous papers(10 a, 10 b, 11), to which I refer the reader for a fulleraccount of the experiment. In the case of these animals, asalready stated, the parents were mated before the discontinu-ance of the temperature differences, though the entire post-natal life of the offspring, as well as the last five days of theirprenatal life, was passed in a common room. A synopsis of the figures for these mice is given in table gross averages do not, in some cases, reveal the generaltendency of this series, which is shown by the relative taillengths, and by the mean differences for all the characters, asgiven in the last section of the table. This general tend-ency is shown much more clearly by the females
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