iv 
Contents 
XIV. On the Nest and Eggs of the Common Tern (S. fluvkdilis). A Second 
Cooperative Study . . . . . . . . . . 308 
XV. On the Degree of Perfection of Hierarchical Order among Corre- 
lation Coefficients. By Godfrey H. Thomson .... 355 
Miscellanea. 
(i) Preliminary Note on the Association of Steadiness and Rapidity of 
Hand with Artistic Capacity. By M. L. Tildesley . . .170 
(ii ) Sur les Moments de la Fonction de Correlation normale de }i Variables. 
Par SVERKBR Bergstrom 177 
( iii ) Formulae for determining the Mean ^'alues of Products of Deviations 
of mixed Moment Coefficients in two to eight Variables in Samples 
taken from a limited Population. By L. Isserlis . . . . 183 
(iv) Inheritance of Psychical Characters. By Karl Pearson . . . 867 
(v) Variation and Distribution of Leaves in Sassafras. By N. M. Grier 872 
(vi) Life-History Albums. By Ethel M. Elderton .... 873 
(vii) The Check to the Fall in the Phthisis Death-rate since the Discovery 
of the Tubercle Bacillus and the Adoption (jf Modern Treatment. 
By Karl Peai'.sox 374 
Plates. 
Plate I. Charles Buckmax Goring, M.D. From a sketch 
by R. Arai . to face p. 297 
Plate II. Nests of the Cuunnon Tern, indicating the range 
of Material used and the charactei- of the 
Environment ........ 308 
Plate III. Eggs of the Common Tern painted by William 
Rowan ,,808 
Plate IV. Common Tern alighting and the Four-Egg Clutch „ 808 
Plate V. Common Tern ari-anging her eggs and settling 
down to sit . . . . . . . „ 308 
Plate VI. Common Tern sitting. The Bird angry . . „ 308 
Plate VII. Comparison of Association in Intelligence of Pairs 
of Siblings as determined by Broad Categories 
and Binet-Simon Tests. Folding Diagram . 870 
Plate VIII. The Check to the Fall in the Phthisis Death-rate. 
Folding Diagram 875 
