ENTOMOLOGY. 55 



The red rot described usually starts at the top of the "black topped" trees. This 

 is caused l)y one of the higher fungi which grows in the wood and causes its decay. 

 The conditions favoring the growth and development of the fungus, as well as its 

 different stages of growth, are described, and a technical* description given of the 

 organism which, according to the author, is Poly por us ponder otni>i, n. sp. 



The amount of diseaseil tindjer in this forest reserve is very great, and as tiie ])ark 

 l)eetles are continuing their attack the amount is increasing. The investigations of 

 the author show that if i^romptly used the timber is valuable and, so far as the blue 

 timber is concerned, is not injured for the ordinary purposes to which this class of 

 trees are put. 



Some nematode diseases of tropical plants, G. Delacroix {Reprint from Agr. 

 Prat. Pai/s CJiaiids, pp. 19, figs. -J). — Descriptions are given of a number of nematode 

 diseases which are caused by the widely distributed Hetcrodera rddicicola. To this 

 nematode the author attributes the banana disease of Egypt and a disease of black 

 [lepper in Cochin China (E. S. R., 14, p. 460), as well as a coffee disease in the West 

 Imlies. Associated with the nematode in the coffee disease is the mycelium of one 

 or more fungi which cause the rotting of the roots of the plants. 



Disease-resisting- varieties of plants, L. Levvton-Braix ( West Indiun Bid., 4 

 {1903), No. 1, pp. 4S~57). — A critical review is given of some of the more important 

 investigations that have been conducted in various parts of the world on the breeding 

 and introduction of disease-resistant varieties of cultivated plants. 



Notes on albinism among plants, E. Pantanelli {Malpighia, If! {190^2), No. 

 11-1 J, pj). 4S7--'^17). — A critical study is reported of various forms of albinism, 

 together with an inquiry into their causes and the various phenomena which attend 

 this abnormal condition. 



Fungus diseases and spraying, H. H. Lamson {New Hainpsliire Stu. Bid. 101, 

 jip. .5.7-67, ]>l. 1). — A brief general account is given descriptive of fungus diseases, and 

 directions are given for the preparation and use of a number of the more common 

 fungicides. Descriptions are given of a number of the more common diseases, 

 special attention being given to those of the apple, grape, peach, plum, and potato. 

 Where remedial or i)reventive treatments are known they are suggested. 



Spraying for the control of insect pests and fungu3 diseases, T. W. Kirk 

 {Neiii Zealand Dept. Agr. Rpt. 1902, pp. 4,34-449). — The author gives in tabulated 

 form the answers to a circular which was extensively distril)ute<l making inquiry 

 regarding the results of spraying experiments for insect pests and fungus diseases. 

 The tables show the fungicide or insecticide used and the effects produced, and the 

 consensus of opinion was almost unanimous in favor of the value of spraying when 

 considered from the commercial standpoint. 



Combined fungicides and insecticides, L. Degrully (Prog. Ayr. d Vit. {Ed. 

 V Est), 24 {1903), No. 19, p>p. 56.5-568). — On account of the possibility of combating 

 fungus diseases and insects with a single treatment, the author has suggested spray- 

 ing with a combined solution which consists of a copper fungicide and an arsenical 

 insecticide. 



ENTOMOLOGY. 



The enemies of agriculture, A. L. Herrera {IjOs plagax de la agrindtura. Mex- 

 ico: MiiiiMerio de Fomento, 1902, 1903, pis. 3-7, pp. 179-434, pis. 5). — This is a contin- 

 uation of the work of which the first and second parts have already been noted 

 (E. S. li., 14, p. 467). The author discusses insects injurious to fruit trees; the eco- 

 nomic importance of birds; the enemies of cacao, coffee, sugar cane, i-ereals, peas, 

 asparagus, ornamental flowers; insect enemies of domestic fowls; ants, injurious 

 locusts, etc. 



4678— No. 1—03 5 



