Contents iii 



PAGE 



XIII. Actinosphaerium Eichurni A Biometrical Study in tho Mass 



Ri'liilicilis of NucliMis aiul Cytoplasin. \',y GeoFFREY ÖMITII . i-il 



XIV. A Proliiriinary Atteinpt to ascertain tho llelationship between 



size of Coli and sizo of Body in Daplniin VKtcjnd Strauss. 



By E. Wakhun 2.";5 



XV. Graduation and Analysis of a Sickuoss Table. B}' W. Palin 



Elderton 2üO 



XVI. On tlie Probable Errors of Frequency Constants. (Editokial.) . 273 



XVII. Third Report on tlie Hybrids between Waltzing Mice and Albino 

 Races. ün the result of Crossing Japanese Waltzing Mice with 

 " Extracted " Recessive Albinos. By A. D. Darbishire . . 282 



XVIII. Mr Bateson's Revisions of Mendels Thoory of Heredity. By 



W. F. R. VVeldon 2SÖ 



XIX. Mendels Laws and sonie Records in Rabbit Breeding. By 



F. A. Woods 299 



XX. Ueber Asymmetrie bei Gelasiniiis puyilutor Latr. Von Georg 



DUNCKER 307 



XXI. Variation and Correlation in Arcella vulgaris. By Raymond 



Pearl and Frances J. Dunbar 321 



XXll. On the Laws of Inheritauce in Man. I. Inheritauce of Physical 



Characters. By Karl Pearson 857 



XXIII. Variation in Ophiocoma Nigra 0. F. Müller. By C. D. McIntosh 463 



XXIV. Tables of Powers of Natural Numbers and of Sums of Powers of 



Natural Numbers from 1 — 100. By W. Palin Elderton . 474 



XXV. Assortative Mating in Man. A Cooperative Study . . . 481 



Miscellanea. 



(i) Note on the Results of Crossing Japanese Waltzing Mice with 



European Albino Races. By A. D. Darbkshire .... 101 



(ii) Interpolation by Finite Differences. (Two Indopendent Variables.) 



By W. Palin Elderton lOö 



(iii) Variation in tho Muscatel {Adoxa Moschatellina, L.). By Henry 



Whitehead 108 



(iv) Seasonal Change in the Characters of Aster prenanthoides Muhl. 



Note on a paper by G. H. Shull 113 



