CONTENTS 
rAOB 
I. Variation and Inheritance in the Parthenogenetic Generations of the 
Aphis Hyalopterus trirhodus (Walker). (Five Figures.) By Ernest 
Warren, D.Sc. . . . . . . . . . , 129 
II. Tables for Testing the Goodness of Fit of Theory to Observation. 
By W. Palin Elderton . . . 155 
III. The Egg of Giiculus canorus. (Two Figures.) By Oswald H. Latter 164 
IV. On Criminal Anthropometry and the Identification of Criminals. (Five 
Figures.) By W. R, Macdonell, LL.p. . . . . . .177 
V. Mendel's Laws of Alternative Inheritance in Peas. By Prof. W. F. R. 
. Weldon, F.R.S . .228 
Plate I. Colour Scale in Hybrid Peas. 
Plate II. Photographs pf Wrinkles in Hybrid Peas. 
Miscellanea, (i) Variability, Symmetry and Fertility in an abnormal 
Species. By Prof. C. B. Davenport . . . .255 
(ii) Variation of the Egg of the Sparrow, Passer domesticus. 
By Prof K. Pearson, F.R.S. . . . . .256 
(iii) Note on Variation in Leaves of Mulberry Trees. (One 
Figure.) By Miss Agnes Fry ..... 258 
(iv) On the Modal Value of an OrgAn. By Prof. K. Pearson . 260 
(v) On the Change in Expectation of Life in Man during^ a 
period of circa 2000 years. (One Figure.) By Prof 
K. Pearson 261 
Biometrika will appear about four times a year. A volume containing 
about 400 pages, Tvith plates and tables, will be issued annually. 
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