61 
307. Smith, Erwin F.—Continued. 
Gives figures showing great increase of the disease in ten representative 
orchards in the upper part of Delaware and Chesapieake peninsula from 
1887 to 1890. Reports results of inoculation experiments by budding healthy 
trees with diseased buds, showing the contagious nature of the malady. 
(These results are to be published in Bulletin No. 1 of the Division.) An¬ 
swers numerous inquiries in regard to the eradication of the disease, deciding 
that concerted action in the matter of removal of diseased material is the 
best means known for the prevention of sx>read of the malady. States that 
fertilizers have been of no advantage whatever in experiments of the p>ast 
three years. 
308. South worth, Effie A. A new hollyhock disease (with fig. copied). Popular 
Gardening, December, 1890, vol. vi, No. 3, pp. 56-57. Reprint of figures and 
abstract of article in Journal of Mycology, vol. vi, No. 3. 
309. Swingle, W. T. First addition to the list of Kansas Peronosporaceae. Extract from 
Trans. 22d and 23d Ann. Meetings, Kansas Acad. Sci., vol. xn, Topeka, Kans., 
pp. 129-134 (March 30, 1891). Gives corrections and additions to original 
list (see This Journal, vol. 6, No. 1, p. 41), rexiortiug Acnida tuberculata as 
new host in the State for Cystopus amaranti, (S.) Berkeley, Bidens chrysanthe - 
monies, Mich, as new host for Plasmopara Halstedii , (Farlow) Berlese and Do 
Toni., and Peronospora calotheca, DBy. as a species new to the State, growing 
on Galium aparine. Notes ability of Peronospora euphorbia to withstand 
drought and habit of Peronosporaceae in general to confine their attacks in 
dry weather to their commoner host plants. Reports from State, including 
this additional list, 33 species on 71 different hosts. 
310. Thaxter, Roland. The Connecticut species of Gymnosporangium (Cedar Apples). 
Bull. No. 107, Conn. Ag. Exp. Sta., New Haven, Conn. (Distributed April 
15, 1891.) Reports soven distinct species for the State, two upon Cupressus 
thyoides, one on Juniperus communis, three upon J. Virginiana, and one upion 
both J. communis and J. Virginiana. Records successful establishment of con¬ 
nection of Gymnosporangium with its p)rop)er rust in all cases but that of G. 
Ellisii, and describes as new sxmeies discovered by cultures Gymnosporangium 
nidus-avis, Thaxter on Juniperus Virginiana, with Boestelia stage upon Cydo- 
nia (quince) and Amelanchier Canadensis. 
311. -. The potato scab (with pdate). Report of Mycologist in 14th Ann. Rep. 
Conn. Ag. Ex. Sta., 1890 (1891), pp. 3-17. Discusses fully the various the¬ 
ories proposed to account for the disease, deciding BruncharsFs Skurv as 
specially distiuct from American scab. Gives general characteristics of the 
disease, with account of the iuvariable presence when p)rop)erly examined of 
an extremely minute fungus, resembling, with exception of its true branch¬ 
ing fructification, some of the polymorphic bacteria. Records the entirely 
successful cultivation of the fungus upon various media and the life history 
as far as understood. Describes most striking series of successful inocula¬ 
tions of healthy tubers with pure cultures and with the fungus freshly 
removed from diseased potatoes. Inclines to the opinion that there are two 
species of scab, which may explain differences in results obtained by Mr. Bol- 
ley and the author (see Nos. 120-121). 
312. -. Diseases of tomatoes. Ibid.,v. 17. Reports Phytophthora infestans, DBy. 
Cladosporium fulvum, Ck e.,Macrosporium tomato, Cke.,and Fusarium lycopersici, 
Sacc., as causing damage in the State of Connecticut. 
313. -. Fungous diseases of tomato worms. Ibid., p. 18. Notes presence for the 
first time observed, of species of Empusa upon larva of the Sphingida and the 
occurrence of Empusa grylli, form aulica, on Phlegethontius Carolina and P. 
celeus. 
314. -. Fungous diseases of grape-leaf hopper and cabbage worms. Ibid., p. 19. Re¬ 
ports species of Empusa upon grape-leaf liox>pers ( Tettigonia vitis ) as also liv- 
