SCIENCE 



Editoeial Committkb : S. Nkwcomb, Mathematics ; R. S. Woodwaed, Mechanics ; E. C. Pickeeing 



Astronomy; T. C. Mkndknhall, Physics; E. H. Thueston, Engineering; Iea Rbmskn, Chemistry; 



J. Le Conte, Geology; W. M. Davis, Physiography; 0. C. Maesh, Paleontology; "W. K. Beooks, 



C. Haet Meeeiam, Zoology; S. H. Scuddee, Entomology; C. E. Bessey, N. L. Beitton, 



Botany; Henky F. Osboen, General Biology; C. S. MiNOT, Embryology, Histology; 



H. P. BowDiTCH, Physiology; J. S. Billings, Hygiene; J. McKeen Cattell, 



Psychology; Daniel G. Beinton, J. W. Powell, Anthropology. 



Friday, October 28, 1898. 



CONTENTS: 



Address of the President before the British Associa- 

 tion for the A dvancement of Science, Bristol, 1S9S 

 (I.) ; SiE William Ceookes 561 



Variations in the Bate of Agricultural Productions 

 and One of their Causes : John Hyde 575 



On the Beappearance of the Tile-fish [Lopholaiilus 

 channel eonticeps): Peofessor H. C. Bumpus...576 



Seriation Curves of the Cephalic Index .' De. Wil- 

 liam Z. Eiplky 578 



Tlie International Conference on Terrestrial Magnet- 

 ism: C. A. SCHOTT 582 



Tlie Tenth Annual Meeting of the Association of 

 Economic Entomologists : C. L. Maelatt 584 



Notes on Inorganic Chemistry: J. L. H 585 



Botanical Notes : — 



A Study of Toadstools ; A Soidhern Fern far from 

 Home; The Function of Bloom; A Tiny Pine 

 Tree: Peofessoe Chaeles E. Bessey 587 



Owrreni Notes on Anthropology : — 



Botanical Knowledge of the Ancient Aztecs ; Sex- 

 ual Dimorphism in Man; Heredity; A Contrast: 

 Peofessoe D. G. Beinton 588 



Scientific Notes and News : — 



The Conference on an International Catalogue of 

 Scientific Literature ; General 589 



University and Educational News 594 



Discussion and Correspondence : — 



A Bule for Finding the Day of the Week : Ed- 

 WAKD L. Stablbe. An Apple Canker: W. 

 Paddock. Wampum Belts: W. M. Beau- 

 champ 594 



Scientific lAterature: — 



Detmer's Plant Physiology : Peofessoe J. C. 

 Aethue. Classen's Quantitative Chemical Analy- 

 sis by Electrolysis; Oettel's Electro-chemical Ex- 

 periments and Exercises in Electro-chemistry : H. 

 C. J 597 



Scientific Journals 599 



New Books 600 



MSS. Intended for publication and books, etc., Intended 

 for review sliould be sent to the responsible editor, Profes- 

 sor J. McKeen Cattell, GarrlBon-on-Hudson, N. Y. 



ADDRESS OF THE PRESIDENT BEFORE THE 

 BRITISH ASSOCIATION FOR THE AD- 

 VANCEMENT OF SCIENCE, BRIS- 

 TOL, 1S98. 



I. 



For the third time in its history the 

 British Association meets in your City of 

 Bristol. The first meeting was held under 

 the presidency of the Marquis of Lans- 

 downe in 1836, the second under the presi- 

 dency of Sir John Hawkshaw in 1875. 

 Formerly the President unrolled to the 

 meeting a panorama of the year's progress 

 in physical and biological sciences. To-day 

 the President usually restricts himself to 

 specialities connected with his own work 

 or deals with questions which for the time 

 are uppermost. To be President of the 

 British Association is undoubtedly a great 

 honor. It is also a great opportunity and 

 a great responsibility ; for I know that, on 

 the wings of the press, my words, be they 

 worthy or not, will be carried to all points 

 of the compass. I propose first to deal 

 with the important question of the supply 

 of bread to the inhabitants of these islands, 

 then to touch on subjects to which my life 

 work has been more or less devoted. I 

 shall not attempt any general survey of the 

 sciences ; these, so far as the progress in 

 them demands attention, will be more fitly 

 brought before you in the different sections, 

 either in the addresses of the presidents or 

 in communications from members. 



