Vol. IX, No. 1.] The Biology of the Lake of Tiberias. 23 
[N.S.]. 
for help in the preparation of which I have to thank a number 
of naturalists in Europe and America as well asin India. I 
have also to thank the Council of the Asiatic Society of Bengal 
for publishing the papers in separate instalments and for liberal 
treatment in other respects. 
EXPLANATION OF PLATE I. 
PHOTOGRAPHS OF THE LAKE OF TIBERIAS. 
Fig. 1. View on the western shore, looking north : to show 
the loose stones on the lower surface of which 
Ephydatia fluviatilis syriaca, : udospongilla mappa 
and Fredericella a occu 
A corner of the city-wall of "Tiberias abtens out 
into the lake. The upper margin o e pale 
streak on the wall represents the level cision by 
the water in winter. The photograph was takenin 
the middle of October, before the rainy season had 
commenced. 
. Outflow of asmall spring in the Plain of Gennesaret 
(October): to show the pebbly beach. 
Fig. 4. Outflow of the Jordan, looking towards the village 
of Semakh from the western bank of the river. 
The strip of water shown outside the actua 
exit, which is well defined by projecting spits, is 
the only known habitat of the sponge Cortispon- 
gilla barroisi (Topsent) and other endemic species. 
bo 
Fig. 
i? 
_e 
= 
i) 
