100 EXPERIMENT STATION. [Jan. 



disease of cucumber and melon ; notes on the occurrence of fungous 

 spores on onion seed ; sjjraying injuries ; control of certain greenhouse 

 diseases; damping-oft" fungi; spraying experiments with calcium ben- 

 zoate; seed purity work, 1909, seed germination and separation; sun 

 scorch on the pine. 



Twenty-third report, 1910 : diseases more or less common during the 

 year; seed work, 1910; an outbreak of rusts; sweet pea troubles; a 

 spinach disease new to Massachusetts; condition of fruit trees in gen- 

 eral; Fusarium disease of cucumbers and other plants; crown gall; 

 chestnut disease {Diaporthe parasitica Murrill) ; shade tree troubles; 

 the spraying of trees; a new type of spray nozzle; the clogging of 

 drain tile by roots; experiments relating to the prevention of the 

 clogging of drain tile by roots; abnormalities of stump growths; peach 

 and plum troubles. 



Twenty-fourth report, 1911 : diseases more or less common during 

 the year; seed work for the year 1911; do we need a seed law in Massa- 

 chusetts; rust on Vinca; bronzing of maple leaves; a notable elm tree; 

 frost cracks; some observations on the growth of elm trees; coarse 

 nozzle versus mist nozzle spraying; a new method for the approximate 

 mechanical analysis of soils; the present status of soil sterilization; in- 

 fluence of soil decoctions from sterilized and unsterilized soils upon 

 bacterial growth ; the effects of positive and negative electrical charges 

 on seeds and seedlings; electrical resistance of trees; experiments with 

 rose soils. 



List of Bulletins issued dy the Department of Vegetable Physi- 

 ology AND Pathology.* 



Electro-Germination, Asa S. Kinney, Bui. No. 43, 1897. 

 Nematode Worms, G. E. Stone, R. E. Smith, Bui. No. 55, 1898. 

 Asparagus Rust, G. E. Stone, R. E. Smith, Bui. No. 61, 1899. 

 Rotting of Greenhouse Lettuce, G. E. Stone, R. E. Smith, Bui. No. 69, 



1900. 

 Growing China Asters, R. E. Smith, Bui. No. 79, 1902. 

 Cucumbers under Glass, G. E. Stone, Bui. No. 87, 1903. ■ 

 Fungicides and Insecticides," G. E. Stone, H. T. Fernald, S. T. Maynard, 



Bui. No. 80, 1902. 

 Injuries to Shade Trees from Electricity, G. E. Stone, Bui. No. 91, 1903. 

 Fungicides and Insecticides," G. E. Stone, H. T. Fernald, F. A, Waugh, 



Bui. No. 96, 1904. 

 Tomatoes under Glass, G. E. Stone, Bui. No. 105, 1905. 

 Blossom End Rot of Tomatoes, Elizabeth H. Smith, Tech. Bui. No. 3, 



1907. 

 Seed Separation and Germination, G. E. Stone, Bui. No. 121, 1908. 



* These bulletins are no longer available for distribution by the Agricultural Experiment Sta- 

 tion, but may be found in any public library within the State. 



* Issued in co-operation with other departments. 



