98 EXPERIMENT STATION. [Jan. 



a so-called black spot disease of the rose [Pilobolus crystallinus Tode) ; 

 a leaf blight or anthracnosc of the cucumber {Colletotrichum Lagen- 

 arium (Pass.) Ell. & Hals.); an unusual outbreak of two rusts, — 

 asparagus rust {Puccinia asparagi D. C.) and a late rust of the Jjlack- 

 berry {Chrysomyxa alhida Klihn.) ; the tomato mildew {Cladosporiian 

 fulvum Cke.); a chrysanthemum rust; "drop" of lettuce {Sclerotinia 

 Libertiana Fckl.) ; wilt of maple leaves; topburn of lettuce. 



Tenth rej)ort, 1S97: the causes of the failure of the jiolato crop of 

 1897 ; the "drop" of lettuce; the asiiaragus rust {Puccinia aaparagi 

 D. C.) ; the fire blight (Bacillus amglovorus (Burr.) DeToni) ; quince 

 rust {Gymnosporangium clavipes C. & P.) ; brown rot of stone fruits 

 {Monilia fructigena Pers.) ; tlie chi-ysantheraum rust (Puccinia Tanaceli 

 S.) ; some leaf blights of native trees; a leaf blight of the sycamore 

 or buttonwood (Glcrosporium ne^'visequum (Fckl.) Sacc.) ; a leaf blight 

 of the butternut (Ghvosporium Juglandis (Lib.) Mont.) ; a leaf spot 

 of the chestnut [Scptoria ochroleuca B. & C.) ; a leaf spot of the wild 

 black cherry (S'eploria cerasina Pk.) 



Eleventh report, 1S9S : scope of work; black spot of the maple (Rhy- 

 iisma acerinum (P.) Fr.) ; oak leaf blight {Gloeosporium nervisequum 

 (Fckl.) Sacc); walnut leaf blight (Ghvosporium Juglandis (Lib.) 

 Mont.); a muskmelon disease; rotting of cabbage; furtlicr considera- 

 tions in regard to the drop in lettuce; the chrysanthemum rust; a new 

 pansy disease; seasonal peculiai'ities of certain shade trees; overfeeding 

 of plants; the bronzing of rose leaves; cucumber wilt; some dilliculties 

 which city shade trees have to contend with. 



Twelfth annual report, 1899: aster diseases; the bacterial cucumber 

 wilt; a geranium disease; muskmelon failures; the maple leaf blight 

 (Phylloslicta acericola C. & E.) ; the chrysanthemum rust; some experi- 

 ments in growing violets in sterilized soil; the relationship existing be- 

 tween the asparagus rust and the physical properties of the soil. 



Thirteenth report, 1900: aster diseases; nematode worms; cucumber 

 mildew (Plasmopara Cubensis B. & C.) ; Russian lliistle in Massachu- 

 setts; influence of chemical solutions ui)on the germination of seeds. 



Fourteenth report, 1901: the dying of cut-leaved birches; the present 

 status of chrysanthemum rust in Massachusetts; the effects of desicca- 

 tion on soil; melon failures; stem rots and wilt diseases; the present 

 status of the asparagus rust in Massachusetts; sterilization of soil in 

 greenhouses for fungous diseases. 



Fifteenth report, 1902: peach leaf cuil (Exoascus deformans (Berk.) 

 Fckl.); ai)i)le leaf spot; sycamoie blight (Glccosporium nervisequum 

 (Fckl.) Sacc); strawberry root rot; apple scab (Fusicladium dendri- 

 iicum (Wallr.) Fckl.); cucumbei' wilt; sweet pea troubles; aster dis- 

 eases; potato blight (Phytophthora infestans (Mont.) DeBarry) ; 

 cucumber and meh)n diseases; asparagus rust (Puccinia asparagi 

 T). C.) ; chrysanthemum rust (Puccinia Chrysanthemi Roze) ; the cucum- 



