i 
DECEMBER II, 1913] 
use of dyestuffs with great tinctorial properties, such 
as fluorescein, in tracing the path of underground 
water-courses, it is shown that the dye need not be 
previously brought into solution if the water is flow- 
ing, and that very large quantities of the colouring 
matter must be employed if erroneous conclusions are 
to be avoided. One hundred kilos. of fluorescein were 
used in one successful experiment. 
CAaLcutTta. 
Asiatic Society of Bengal, November 5.—H. B. 
Preston: A molluscan faunal list of the Lake of 
Tiberias with descriptions of new species. The paper 
deals in the first instance with a large collection made 
by Dr. Annandale at and near Tiberias in October, 
1912. A remarkable feature of the molluscan fauna 
of the Lake of Tiberias is the thickness of the shells 
of most of its constituent species and the almost com- 
plete absence of thin-shelled forms. This is probably 
due to the large amount of mineral matter held in 
suspension in the water. The distribution of the 
different species is discussed under the heading of 
each, and several new species and varieties are 
described. With the exception of a species of Unio, 
these are for the most part minute shells.—R. H. 
Whitehouse ; The Planarians of the Lake of Tiberias. 
Three species of Planaria were taken in the immediate 
vicinity of the Lake of Tiberias, from which no repre- 
sentative of the group has hitherto been identified 
specifically —Dr. G. Horvath: Aquatic and semi- 
aquatic Rhynchota from the Lake of Tiberias and its 
immediate vicinity. The collection made includes 
seventy-nine specimens of aquatic and -semi-aquatic 
Rhynchota, representing twenty-one species, of which 
three are new to science.—Dr. N. Annandale, J. C. 
Brown, and F. H. Gravely: The limestone caves of 
Burma and the Malay Peninsula. This paper is 
divided into three portions. The first is introductory 
and gives a general account of the caves of Burma 
and the Malay Peninsula, a history of the literature 
which has ground up around them since the early 
days of the eighteenth century, and particulars of 
their archeology and folklore. Part i. is by J. 
Coggin Brown, and deals with the geology of the 
cave-bearing limestones of Burma and the Malay 
Peninsula. The opinion is expressed that on thorough 
examination many of the limestone caves of Burma 
and the Malay Peninsula will be found to contain 
deposits with recent or subrecent fossil remains. 
Part ii. is by N. Annandale and F. H. Gravely, and 
consists of an account of the fauna of the caves. 
Although both blind and purblind species are included 
in the list, no animal as yet recorded from these caves 
has reached the height of specialisation sometimes 
developed by a_cavernicolous existence; such, for 
example, as is found in the case of certain species 
from the caves of Europe and North America. An 
appendix contains notes by Ch. Duroiselle and B. B. 
Binyabinode on clay votive tablets from the caves. 
BOOKS RECEIVED. 
Studies in Career and Allied Subjects. Pathology. 
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Einfiihrung in die Tierpsychologie auf experiment- 
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Annals of the Transvaal Museum. Vol iv., part 2. 
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