78 BOTANICAL GAZETTE [JANUARY 
under forestry ; 37 under seeds and weeds; and 180 under diseases of plants; 
making over 400 with a distinct botanical bearing. Besides these there are 
abstracts under chemistry, soils, field crops, and horticulture which are often 
of direct interest to botanists. 
INTERESTING INFORMATION regarding rubber of various kinds, its origin, 
collection, preparation, etc., will be found in recent Circudars of the Royal 
Botanic Gardens of Ceylon, and the Bud/etins of the Royal Gardens at Kew. 
Many insects and fungus enemies, some of local origin, some introduced from 
Assam and elsewhere, are now attacking tea in many parts of Ceylon. The 
gray blight, a leaf disease due to Pestalozzia Guepini, and brown blight, due 
to Colletotrichum Camellig, are both now to be found in most districts.— 
CAReB 
Mr. AtsusHI YAsuDA has in hand work on the influence of inorganic 
salts upon the conidia formation of Asperigillus niger3 He finds that 
increasing concentration of the solutions of K, Na, NH,, and Mg salts retards 
the formation of conidia, reduces the size of the fruits, shortens the conidio- 
phores, and promotes the blackening of the conidia. When very concen- 
trated the formation of conidia is suppressed.— C. R. B 
Dr. A. J. Grout suggests“ that to devise a truly natural classification 
of the pleurocarpous mosses much more consideration must be given to 
gametophytic characters than hitherto, since ali arrangements based mainly 
on sporophytic characters produce juxtapositions of unrelated species, of which 
he cites abundant illustrations. He is not yet ready, however, to propose 4 
new grouping.—C. R. B 
R. GEO. MASSEE has a revision of the twenty-six species of Tilletia in 
the pre of Miscellaneous Information, at Kew Gardens, nos. 153, 154+ 
The United States is credited with nine species, ranking next to the continent 
of Europe with thirteen species.—C. R. B. 
MONOGRAPH of the Danish blue-green alge is published by John 
Schmidt in the Botanisk Tidsskrift 22: 283-418. 1899. It is illustrated by 
thirty-eight figures.— C. R. B. 
*3 Tokyo Bot. Mag. 13: 85. 1899. 
** Revue Bryologique 26: 72-77. 1899. 
sibs 
