SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



Friday, December 1, 1905. 



CONTENTS. 



The Logical Basis of the Sanitary Policy of 

 Mosquito Reduction : Sir Roxald Ross. . . . 689 



Scientific Books: — 



Poynting and Thomson's Heat: Professor 

 J. S. Ames. Freeman on Minnesota Plant 

 Diseases: Professor Charles E. Bessey. 

 Mayer on Sea-shore Life : Professor T. H, 

 Morgan 699 



Societies and Academies: — 



The American Mathematical Society: Pro- 

 fessor F. N. Cole. Northeastern Section 

 of the American Chemical Society: Dr. A. 

 M. CoMEY. The Chemical Society of Wash- 

 ington: Dr. a. Seidell. The Philosophical 

 Society of Washington : Charles K. Wead . 701 



Discussion and Correspondence: — 



Dr. 0. F. Cook's ' Social Organization and 

 Breeding Habits of the Cotton-protecting 

 Kelep of Guatemala': Dr. William Mor- 

 ton Wheeler. Isolation and the Origin of 

 Species: Professor F. E. Lloyd. The Small 

 Mounds of the United States: Dr. D. I. 

 Bushnell, Jr 706 



Special Articles: — 



The Loch Leven Trout in California: Presi- 

 dent David Starr Jordan. The Relation 

 of Soil Texture to Apple Production: Henry 

 J. Wilder. A Correction of the Generic 

 Name (Dinochcerus) given to Certain Fos- 

 sil Remains from the Loup Fork Miocene of 

 Nebraska: 0. A. Peterson 714 



Quotations : — 



Academic Freedom in Japan 719 



Notes on Entomology : Dr. Nathan Banks. . 720 



Botanical Notes: — 



hidex of North American Fungi; The Fern 

 Allies of North America; The Grasses of 

 Iowa; Experiments with Plants: Professor 

 Charles E. Bessey 721 



International Exploration of the North Sea. 723 



Greek at Cambridge 724 



The American Psychological Association 724 



Scientific Notes and Neivs 725 



University and Educational Neivs 727 



MSS. inteuded for publication aud books, etc., intended 

 tor review should be sent to tbe Editor of Science, (iarri- 

 90!i-on-Hudson, N. Y. 



THE LOGICAL BAySIS OF THE SANITARY 

 POLICY OF MOSQUITO REDUCTION."^ 



The great science of preventive medicine 

 is often called upon to consider new policies 

 of public sanitation, which, whether they 

 ultimately prove successful or not, are al- 

 ways of profound interest and importance 

 to mankind. Quite recently a new measure 

 of this kind has been proposed, which in 

 the opinion of many promises to rank with 

 house sanitation and preventive inoculation 

 as a means of saving human life on a large 

 scale. Unfortunately, its value has not yet 

 been clearly demonstrated— with the result 

 that it is not being employed as largely as 

 some of us hoped would be the case. I feel, 

 therefore, that I can not better acknowledge 

 the honor you have done me in inviting me 

 to address you to-day than by attempting 

 to discuss this important theme — in the 

 hope that the discussion may prove profit- 

 able to the cause of public health. The new 

 sanitary policy to which I refer is that 

 which aims at the reduction of disease- 

 bearing insects, especially those which are 

 the disseminating agents of malaria, yellow 

 fever and filariasis. 



I presume that it is scarcely necessary to 

 discuss the evidence which has established 

 the connection between various insects and 

 arthropods and many diseases of man 

 and of animals. The fact that the patho- 

 genetic parasites which produce those great 

 scourges of the tropics just mentioned are 

 carried by gnats is now too well known to 

 require reiteration. It is necessary only to 



^ Read at the International Congress of Arts 

 and Science. 



