252 Fiingi) Bacteria und Pathologie. 



doubt, the mode of propagation ; next to it the internal structure of 

 the frond, and last the external form. Then, he niakes some remarks 

 on: 1. Propagating Organs; 2. Ramiiication; 3. Articuli and 4. Genicula. 



Okamura. 



Britton, W. E. and H. L. Viereck, Insects collected fromthe 

 flowersof fruit trees and plant s. (Report of the Connec- 

 ticut Agricultural Experiment Station. 1905. p. 207—224. 1906.) 



The authors present lists of species of insects coilected on the 

 flowers of Ribes oxyacanthoides, R. rubrum, R. nigriun, Prunus tri- 

 loba, P. avium, P. persica, Pyrus malus, P. communis, Cydonia 

 vulgaris, Rubus nigrobaccus, R. strigosus, and Fragaria virginiana. 

 Insects taKen numbered 2,416, belonging to 396 species. The authors 

 conclude that the importance of the honey-bee has been overesti- 

 mated and that more significance is to be attributed to the smaller 

 bees. Harris. 



Chester, f. D., Report of the Mycologist. (12. Annual Report 

 of Delaware College Agricultural Experiment Station, for the year 

 ending June 30, 1900. pages 38—76. 1901.) 



The report includes the following topics: 



1. Treatment of apple scab, giving an account of spraying ex- 

 perinients with Bordeaux Mixture. The results show 100"/» of per- 

 fect fruit on sprayed trees as against 25,r7o of partly scabbed, and 

 117o of badly scabbed fruit on unsprayed trees. 



2. Notes on pear blight, in which the pear blight organism 

 (Bacterium amylovorum) is described and figured, and a number of 

 inoculation experiments into the buds, leaves, fruits and twigs are 

 described. 



3. Canker in the apple and pear, describing the pear and apple 

 canker, caused by Sphaeropsis Malorum, together with suggestions 

 for preventing the same. 



4. Bacteriological studies of drinking water, consisting of a 

 number of analyses of drinking water, with particular reference to 

 the detection of pathogenic bacteria. von Schrenk. 



Chester, F. D., Report of the Mycologist. (13. Annual Report 

 Delaware Agric. College Experiment Station, for the year 1901. 

 p. 36—73. f. 1—9. 1902.) 



The report includes the following. 



1. Diseases of Cantaloupes, consisting of a description of the 

 leaf blight, caused by Macrosporium cucumerinum E. and E.; the 

 leaf blight caused by Cercospora (sp. indt.) ; and stigmonose. 



2. Pear canker treatment, in which directions are given for 

 treatment against the canker fungus, Sphaeropsis Malorum, by the 

 use of copper whale oil soap, formaldehyde glycerine mixture, and 

 Bordeaux-Rosin soap mixture. 



3. Experiments in bagging plums, from which it appears that 

 bagging diminished the rot due to Monilia but little, from which 

 it may be concluded that the plums became infected through some 

 other Channel than by direct infection of the fruit itself. 



4. Treatment of plum rot, which show that poor results were 

 obtained when plums were sprayed with Bordeaux mixture. 



5. Studies in Soil bacteriology, presenting the results of numerous 

 bacteriological soil analyses. von Schrenk. 



