de;partment of experimkntaIv evolution. 



95 



Culture. 



O. lata (No. 3500), self-pollinated 



O. lata (No. 3527), self-pollinated 



O. lata (No. 3571), self-polliuated 



C). lamarckiana ? (No. 3814) X O.lata 

 d ( No. 3500) 



O. lata 9 (No 3500) X O. lamarckiana 

 cf (No. 3814) 



O. lamarckiana ? (No. 3814), self- 

 pollinated 



O. gigas (No. 3672, basal branches), 

 self-pollinated 



O. gigas (No. 3671), lacking basal 

 branches, self-pollinated 



O. lamarckiana $ (No. 3814) X O. 

 gigas d (No. 3672) 



O. lata 9 (No. 3500) X O. gigas cf (No. 

 3672) 



I,ata-like (No. 3378) Fj offspring O. 

 lata 9x0. gigas J", 1908, self- 

 pollinated 



Gigas-like (No. 3368) Fi offspring 

 O. lata 9x0. gigas d, 1908, self- 

 pollinated 



(No. 3375) Fi offspring O. lata 



9x0. gigas d, 1908, self-polli- 

 nated 



Intermediate (No. 3379) Fi offspring 

 O. lata 9x0. gigas cT, 1908, self- 

 pollinated 



Intermediate (No. 3750) Fi offspring 

 O. lata 9x0. gigas cf, 1908, self- 

 pollinated 



O. nanella 9 (No. 3704) X O. lamarck- 

 iana d" (No. 3796) 



O. nanella 9 (No. 3704) X O. gigas c^ 

 (No. 3671) 



Lamarckiana (No. 1166) having re 

 mained in sphagnum moss as 

 young rosette for 2 years 



Cuttings from Fi offspring O. lata 9 

 X O. gigas d, 1908 



Biennials from 190S 



Seeds sown. 



Dec. II, 1908 



Do 



Do 



f ....Do 



\ Feb. I, 1909 



Dec. 12, 1909 

 /Dec. 12, 1908 

 (Feb. 4, 1909 



Dec. 12, 1908 

 Do 



Dec. 14, 1908 

 Do 



Dec. 12, 1908 

 Dec. 14, 1908 



Do 



Dec. 15, 1908 



Total. 



Do 



Mar. I, 1909 

 Mar. 2, 1909 



Feb. — , 1909 



No. of 

 plants 

 reared 

 through 

 early 

 rosette 

 stages. 



73 



35 

 18 



} '« 



45 

 I 40 



31 

 31 

 52 

 71 



12 



52 

 109 



8 



3 



134 



90 



13 

 20 



No. of 

 plants 

 trans- 

 ferred to 

 garden. 



914 



73 

 35 

 18 



3 

 40 



31 

 31 

 52 

 33 



52 

 109 



8 



3 



134 



90 



I 

 13 



Date of trans- 

 plantation. 



May 12, 1909 



Do 



Do 



May 13, 1909 



May 12, 1909 

 May 12, 13, 1909 



May 12, 1909 



Do 



Do 



Do 



.Do. 

 .Do. 

 .Do. 

 .Do. 



746 



Do 



May 13, 1909 

 Do 



May 13, 1909 

 May 12, 1909 



No. of 

 plants from 

 which root- 

 tip fixations 

 were made 

 for chromo- 

 some study. 



73 

 35 

 18 



31 

 5 



31 



31 



52 



I 



12 



52 



109 



8 



3 

 o 

 o 



13 

 20 



502 



HUMAN HE;REDITY. 



Although not strictly within the scope of experimental work, the necessity 

 of applying the new knowledge of heredity to human affairs has been too 

 evident to permit us to overlook it. For the last two years Mrs. Davenport 

 and I have been collecting data on the inheritance of eye and hair characters. 

 Last winter blanks for the record of family characters were prepared and 

 distributed to the number of over 5,000 and over 250 of these have been re- 

 turned. In many cases the greatest pains have evidently been taken to give 

 full and accurate data. The reduction of these data will be begun at once. 

 Only one character can be studied at a time and it will be at the best several 

 years before all of the material can be utilized. Expectation is that it will 

 eventually be possible, in the case of marriage of two individuals with the 

 same characteristic or differing in respect to any characteristic, to state how 

 the characteristic will be distributed among the children. 



7 — YB 



