July 2, 1920] 



SCIENCE 



15 



forces between colliding atoms depends on the 

 nature of the atoms and hence the pressure 

 shift is different for different substances f"- 

 Elizabeth E. Laied 

 Mount Holtoke College, 

 May 3, 1920 



ANOPHELES LARV^ IN SALT WATER 



Dr. F. E. Chidester in Science, Vol. LI., 

 No. 1314, presented some interesting data on 

 the occurrence of certain North American 

 Anopheles in brackish water, and referred to 

 Professor Smith's account, which was pub- 

 lished in 1904, and which "has been either 

 ignored or discredited." 



It may be of interest to call attention to 

 some other Anopheles which live in brackish 

 water and which are not included in Dr. 

 Chidester's account. In my paper on the be- 

 havior of certain of our Canal Zone Anopheles 

 (Annals Ento. Soc. of America, 1915, page 

 235) I gave the chlorine content of samples 

 of water from which larvas of Anopheles 

 albimanus Wiede, A. tarsimaculata Goeldi and 

 ^des taeniorhynchus Wiede, were taken. 

 These samples had from 11,250 to 23,500 parts 

 of CI per million. Considering sea-water as 

 having 22,000 parts of CI per million, these 

 samples represented from 51.1 per cent, to 107 

 per cent, of sea-water. There were 38 sam- 

 ples all told, the average CI content being 

 15,81Y parts per million, or equaling 72.0 per 

 cent, of sea-water. 



We get most of our A. tarsimaculata from 

 the lowlands at both ends of the Panama 

 Canal. 



James Zetek 



Anoon, C. Z. 



QUOTATIONS 



THE LISTER INSTITUTE 



The Lister Institute of Preventive Med- 

 icine was founded in 1891, in honor of Lord 

 Lister, to conduct scientific inquiries tending 

 to prevent disease. The attachment of a hos- 

 pital to the institute was specifically excluded 

 by the articles of association, possibly to 

 secure support from the many leaders of med- 

 icine who were on the staffs of existing hos- 



pitals, and possibly, also, because the intimacy 

 of the union between clinical work and re- 

 search was not sufficiently realized. By 1914 

 it had become plain that research could not be 

 conducted with full advantage unless it went 

 hand in hand with clinical opportunity. The 

 experiences of the war drove home the lesson. 

 Members of the staff of the Lister Institute 

 and many other physicians and surgeons en- 

 gaged on the battle-fronts, at base hospitals, 

 or at military hospitals in this country, found 

 that the immediate task of healing the sick 

 not only advanced abstract knowledge, but 

 set new problems for research. The governors 

 of the institute have resolved unanimously to 

 make the requisite changes in the articles of 

 association. A convenient site for the pro- 

 posed hospital lies adjacent to the institute. 

 The council of medical research is the chan- 

 nel through which funds provided by\ the state 

 are allotted to universities and research in- 

 stitutes, and it is to that body that the appeal 

 is addressed. The proposed hospital need not 

 be large. Its beds would be filled with 

 selected cases, varying from time to time 

 according to the specific inquiries that were 

 being made. There would be relief to the 

 general hospitals rather than rivalry with 

 them. The experience of the Pasteur Insti- 

 tute in Paris and of the Eockefeller Eesearch 

 Hospital in New York shows that patients 

 selected for a special purpose take an interest 

 in their involimtary contribution to the ad- 

 vancement of knowledge, and rejoice that 

 their own misfortunes may be the source of 

 relief to others. They are certain of getting 

 treatment even more considerate than that of 

 a general hospital, and they have the advan- 

 tage of not being the object-lessons of clinical 

 teaching. — The London Times. 



SCIENTIFIC BOOKS 



Pasteur, The History of a Mind. By Emile 

 DuCLAux. Translation by Erwin F. Smith 

 and Florence Hedges.* 

 Both the French publication and this trans- 



1 A translation with annotations and additions 

 of the original work, "Pasteur: Histoire d'un 

 esprit," which appeared in 1896. 



