71. 
72. 
73+ 
74- 
75: 
76. 
77: 
78. 
LIST OF ILLUSTRATIONS 
. Oenothera lamarckiana. Gio ais “lay. CRE. She? GEL 
. A SERIES SHOWING Oenothera lamarckiana AND SEVERAL OF ITS 
Mutants GROWING SIDE BY SIDE 
. DIAGRAM SHOWING IN CONDENSED FoRM THE GENEALOGY OF 
THE Oenothera lamarckiana FAMILY AND ITs VARIOUS MUTANTS 
. SoME DIvERGENT Types (MuTATIONS) OF BEETLES PRODUCED 
BY SUBJECTING THE GERM CELLS TO EXTERNAL INFLUENCES 
. Two PLANTS oF Onagra biennis, SHOWING THE EFFECT OF 
INJECTIONS OF ZINC SULPHATE INTO THE OVULE 
. POLYGON OF VARIATION FOR THE TOTAL NUMBER OF SCUTES IN 
THE NINE BANDS OF THE ARMADILLO 
. BrwopaL PoLycon PLOTTED FROM DATA ON THE EARWIG 
. CORRELATION TABLE OF 400 PLANTS OF Srxty-Day Oats . 
. Diacram oF Gatton’s “Law OF ANCESTRAL INHERITANCE” 
. SCHEME TO ILLUSTRATE GALTON’s “LAW OF FILIAL REGRESSION” 
. DiacramM ILLUSTRATING BEHAVIOR OF CHROMOSOMES IN 
MENDEL’s Cross OF TALL AND DWARF PEAS 
. DIAGRAM ILLUSTRATING BEHAVIOR OF First HyBrip GENERA- 
TION WHEN INBRED 
. DIAGRAM ILLUSTRATING DriyvBRID RATIO . : F 
. DracRAM SHOWING THE CHARACTERISTIC PAIRING, cae Rowe 
TIONS, AND SHAPES OF THE CHROMOSOMES OF Drosophila 
ampelophila . me ete 
DiaGRAM OF MITOSIS IN A ena Hine aes aaa: 
SOMES IN Its CELLS Bo ciGh cde) Gate “Gp- Siesta eve. oe 
THE REDUCTION DIVISION AS ens FOR A SPECIES 
WHOosE DrPLom NuMBER Is Four 
D1aGRAM OF CHROMATIN INTERCHANGE BETWEEN HomoLo- 
Gous MEMBERS OF A Parr OF CHROMOSOMES 
D1aGRAM SHOWING CONSEQUENCES OF INDEPENDENT SEGREGA- 
TION OF CHROMOSOMES IN Drosophila ampelophila . 
DracrRamM TO SHOW CHROMOSOME RELATIONS IN THE INHERIT- 
ANCE OF SEX IN Drosophila ampelophila . be hae 78 
DracrRaM SHOowING How THE ORIGINAL SCHEME Must BE 
MODIFIED TO SATISFY THE PRESENCE AND ABSENCE HYPOTHE- 
SIS So wt coh ose oe Se a, a), ae ee Se Se is ee. 
D1aGRAM SHOWING How PRESENCE AND ABSENCE SCHEME Is 
ACTUALLY USED. Bhs athe 158: ches oe eX. OF 
DraGRAM ILLUSTRATING BLENDING INHERITANCE . 
408 
409 
411 
414 
415 
416 
