528 



SCIENCE 



[N. S. Vol. XXXVII. No. 953 



The habits of mosquitoes, adults and young, 

 are treated in 50 pages, followed by a detailed 

 account of their natural enemies. This last 

 topic is evidently capable of great extension, 

 and it is evident that any intelligent amateur 

 can readily add to what is known by observa- 

 tions in his own locality. The relation of 

 mosquitoes to man occupies about 260 pages, 

 covering both theoretical and practical as- 

 pects. The very clear and well written, but 

 not in the least sensational, accounts of the 

 discovery of the connection between mos- 

 quitoes and malaria and yellow fever ought to 

 be reprinted and distributed broadcast over 

 the country. Some bulletins of the Depart- 

 ment of Agriculture give useful practical in- 

 formation about mosquitoes and disease, and 

 there are various other more or less accessible 

 publications dealing with these matters; but 

 would it not be a good thing if the plain, un- 

 varnished, historical account of the work of 

 Manson, Eoss, Grassi, Finlay, Eeed, Carroll 

 and Lazear (and we should like to add por- 

 traits of these men) could be sent, in the 

 form of a pamphlet, to every school in North 

 America? We offer the suggestion to Mr. 

 Carnegie. To this account might be added 

 the words of the authors, who after describing 

 brilliant anti-malarial work in foreign coun- 

 tries, are obliged to say: "In the United 

 States, it is sad to relate, almost nothing has 

 been done in the way of an active campaign 

 against malaria alone, even in restricted lo- 

 calities. It is true that extensive work has 

 been done against mosquitoes, but in the most 

 of these cases the incentive does not seem to 

 have been to better the health of the people or 

 to stamp out malaria." The volume ends with 

 a bibliography and a very complete index. 



The second volume contains 150 beautiful 

 plates, illustrating the structural characters 

 of the eggs, larvse, pupse and adults. In a 

 work otherwise characterized by such con- 

 scientious crediting of all assistance, it is sur- 

 prising to see no reference to the artist or 

 artists of the plates; doubtless this informa- 

 tion will be given in the next volume.' We 



' I have since learned that the drawings of whole 

 larvse and the detail drawings of larva (plates 86- 



note that in the names of species, no attempt 

 is made to alter the terminations of adjectival 

 specific names to make them agree in gender 

 with the names of the genera to which they 

 are referred. T. D. A. Cockerell 



University of Colorado 



Trees in Winter: their Study, Planting, Care 

 and Identification. By Albert Francis 

 Blakeslee, Ph.D., Professor of Botany and 

 Director of Summer School, Connecticut 

 Agricultural College, and Chester Deacon 

 Jaevis, Ph.D., Horticulturist, Storrs Ex- 

 periment Station. Illustrated Octavo, 446 

 pp. New York, The Macmillan Company. 

 1913. 



About a year ago the writer of this review 

 had the pleasure of making a short notice' of 

 Bulletin 69 of the Storrs Agricultural Experi- 

 ment Station, entitled " New England Trees 

 in Winter " by the authors of the work now 

 under consideration. Then we said " We do 

 not recall any better treatment of our trees 

 than is to be found in this publication." 

 Further use of the bulletin confirms the favor- 

 able impression made on its first appearance. 

 We have now a very considerable enlargement 

 and revision of the bulletin in the form of the 

 stout volume whose name appears at the head 

 of this review. In revising the earlier publi- 

 cation the authors have introduced chapters 

 on the structure, life and growth of trees, their 

 propagation, tree planting in the country and 

 the city, how to plant, care, common injuries, 

 control of parasites, insecticides, etc. In 

 these chapters the authors have managed to 

 condense a great deal of valuable informa- 

 tion for the general reader, and especially for 

 the owner of a piece of ground on which trees 

 are now growing, or on which the ovmer wishes 

 to plant trees. Nor do they present the grow- 

 ing of trees merely from the standpoint of 

 utility, although that is sufficiently empha- 



131) are by Mr. Knab, part of the latter inked in 

 by Miss Mary Carmody. The male genitalia are 

 drawn by Miss Carmody; the eggs (plates 146- 

 147) are by Miss E. G. Mitchell. The photograph 

 of Anopheles wings is by Mr. H. S. Barber. 

 ^ Science, March 22, 1912. 



