460 



JENNINGS— HEREDITY IN PROTOZOA. 



[Apiii 2^ , 



Table XVIII. 

 Effects of Environmental Conditions on Dimensions and Constants of Varia- 

 same culture at the same time (except in rows 12, 15 and 20). The 

 appendix or elsewhere, in which fuller data are given for the lot in 



9 

 10 



II 

 12 



14 

 IS 



16 

 17 



A. Progeny of D. 

 First Series. 



Random sample of j9, June 11, 



1907 •. 



Same after 24 hours in fresh 

 hay infusion, June 15 



Two days after last ; culture 

 fluid not renewed, June 17... 



Same, after 24 hours in fresh 

 hay infusion. Rapid multi- 

 plication, June 18 



Same, one week later ; bac- 

 teria multiplied injuriously, 

 June 25 



Starvation, same as row 2, but 

 left II days in small quantity 

 of fluid, June 25 



6.*: 



135 



195 



178 



Length. 



Second Series. 

 24 hours in fresh hay infusion ; 



rapid multiplication, July 17.. 200 

 Same as last, but starved 



week, July 24 J150 



Same as last, but 24 hours in 



fresh hay infusion, July 25.., 

 Same as last, but kept i week 



without change of fluid, July 



31 



Same as last, but kept 48 hours 



in fresh hay infusion, Aug. 3. 



Rows 8, 10 and 11 combined... 



350 



150 

 150 



Third Series. 



Slender, old culture, in large 

 jar, September 15 



Same as last, after 48 hours in 

 fresh hay infusion, Septem- 

 ber 15 



Rows 13 and 14, combined 



B. Progeny of c. 

 Random sample of c, June 11, 



1907 • 



Random sample of c, August 9., 



450 



100 



200 



100 

 100 



5 

 51 



6 



7 



52 

 53 



30 



19 

 20 



21 

 22 



54 

 55 



4 

 56 



Mean in 

 Microns. 



Standard 



Deviation 



in Microns. 



i88.36ozb .980 I4.532zb .692 



i84.68ozb .848ii2.596=b .600 



i85.oo8± .836 i4.420rt .592 



I76.i24rbl.l28 23.360zir .797 



I 



20i.888d=i.i47 22.68ozb .811 



1 



i49.36ozh .736 10.8963= .520 



I >4.ico .776 16.264,4= .548 

 146.1084= .563 10.228=1= .398 

 i63.932=fc .754 20.928=!= .533 



174.4004= .819 14.876=+= .579 



191. 360; 

 180.624: 



.943 17. 116: 

 .748 23.537: 



.666 

 .529 



202.2804=1.031115.2844= .729 7.5564=.362 



Coefficient of 

 Variation. 



7.7i5±.37o 

 6.82i4=.327 



7.794±.324 



13. 262 4= .461 



ii.2334=.407 



7.2964=.350 



8.834 4=.30o 



7.oo34=.274 



i2.7674=.33i 



8.530=-335 



8.945 ±-35 1 

 i3-795±-3i6 



175.3204=1.060 15.7084= .749 

 188.800=+= .98020.5404=1.092 



130.1204= .628| 9.2844= .443 

 123.6664= .813 12.0404= .573 



8.959=h.43i 

 10.8794z.37 1 



7.i34±.342 104-156 

 9.736=4.469 100-160 



Range of 



Variation 



in Microns. 



128-228 

 156-224 

 148-212 



104-220 



140-256 



128-188 



140-216 

 120-176 

 120-220 



132-212 



136-240 

 120-240 



160-232 



124-216 

 124-232 



