*:*** * >* *; ^ 

 * " Sf'sU 

 AfW :***: J : ,- '. 



S* * o ,-$/*; 



2 FIRST REPORT ON ECONOMIC BIOLOGY. 



The Pear-leaf Blister Mite has made its appearance in the 

 Evesham, Burton, and Kidderminster districts, and the Pear Thrips 

 has appeared in a number of \Yorcestershire localities. 



The Woolly Aphis has spread in numerous new localities, and 

 in many, in Worcestershire, is assuming a serious aspect. 



So far as one can judge from the letters of correspondents and 

 the inquiries received, the Black Currant Gall-Mite, Apple Sucker, 

 Winter, March, Mottled Umber and Lackey Moths, Pear Midge, 

 Pear Sawfly and Gooseberry Sawfly have not been anything like so 

 numerous or serious as during the three preceding years. 



Of fungus diseases the " Brown Rot " and " Black Spot " of 

 fruit trees are by far the most serious, and unfortunately in many 

 districts no steps are taken to control or eradicate these diseases. 

 Familiarity has bred contempt, and growers are content \vith dirty, 

 scabby, cracked, undersized fruit. 



The Yellow Wart Disease of Potatoes is still amongst us, whilst 

 the number of cases reported and the severity of the attacks of Finger- 

 and-Toe Disease are less than I have known for many years past. 

 The disease known as Sleepy Disease of Tomatoes has been very 

 virulent. Throughout the whole country this disease has made great 

 headway during the past few years, and is now perhaps the worst 

 that tomato growers have to contend with. 



My thanks are tendered to many fellow workers, particularly 

 so to R. S. Bagnall, F.F.S., Dr. C. Borner, H. Willoughby Ellis, 

 F.E.S., Prof. Percy Groom, Dr. L. O. Howard, George Massee, 

 F.L.S., Robert Newstead, F.E.S., Dr. H. Schott, Dr. A. E. Shipley, 

 F.R.S., Prof. F. Silvestri, and W. T. Wilson, F.R.C.Y.S. 



