1898 | CURRENT LITERATURE 287 
Shortly he turned his attention to physiology, and was soon made associate pro- 
fessor at Koénigsberg. In 1849 he was called to the professorship of physi- 
ology in Vienna. Here he remained to his seventieth year as teacher and 
indefatigable investigator, surrounded by numerous pupils, who were inspired 
by his vigor and enthusiam. In 1889 he retired from active work, and died in 
1892. His industry and success are somewhat indicated by the long list of 
scientific papers —one hundred and thirty —which he published.—C. R. B. 
NOTES FOR STUDENTS. 
A THIRD ARTICLE, by the colonial botanist, F. M. Bailey, enumerating 
the fresh-water algze of Queensland, is issued as Botany Bulletin XV by the 
Queensland Department of Agriculture. The thirty-eight pages are accom- 
panied by seventeen excellent plates from pen drawings.—]J. C. A. 
ITEMS OF TAXONOMIC interest are as follows: In the last fascicle of 
Pittonia (3: 329-344. 1898) Professor Greene continues his descriptions of 
new species of Convolvulus, nine of which are described ; proposes four new 
species of Canadian violets, from Macoun collections; and describes a 
fascicle of new labiates, thirteen in number.—S. B. Parish has begun in 
Erythea (6:85-92. 1898) a series of important papers on new or little known 
plants of southern California. The first one discusses about fifty plants, 
describing five new species and six new varieties.— J. M. C. 
A NEW SPECIES of Pleodorina, P. ///inozsensis, is described by C. A. 
Kofoid in a recent Bulletin of the Illinois State Laboratory of Natural His- 
tory, and illustrated with two plates showing form and development. Com- 
parisons are made with P. Ca/ifornica, now known from Indiana and Illinois 
as well as California. It is also pointed out that there are some reasons for 
thinking that the new form may be only a stage in the development of 
Eudorina, probably of £. e/egans. We note an omission in the bibliography 
of the article by Severance Burrage on ‘A new station for Pleodorina Cali- 
fornica” in Proc. Ind. Acad. 1895: 99—I100.—J. C. A. 
AT A RECENT meeting of the Imperial Academy of Sciences in agente 
Dr. Wilhelm Figdor, assistant in the institute for plant physiology o. 
University of Vienna, read a paper entitled “Investigations upon ee 
nomena of sap pressure (Blutungsdruckes) in the tropics. « A summery - 
his results is translated from the Osterreichische Botanische Zeitschrift 48: 
359. 1898. ; 
“1. In the tropics in contrast with the prevalent relations in our latitudes, 
there is always a positive sap pressure, which shows a very dilterenk SeneTy 
in the various plants observed. . ms 
“2. The amount of sap pressure attained in general is two or three times 
