Vol. IX, No. 1.] The Water of the Lake of Tiberias, 27 
[N.S.] 
of these springs, Birket el Ezair, is given by M. Blankenhorn.! 
The sample was taken in i 
Reduced to the percentage ionic form, the results are— 
NGS eee Ie 
Ge. kee 
Ol. Er % 
SO ees 
CO; SBS Y 
SiO; 22 P12°%, 
100-00 
The salinity is 3544 parts per million. Another analysis is 
given by Blankenhorn (loc. cit., p. 344) of water from the 
octagonal pool described below or from the stream stated to 
flow out of it. Recalculated to the same form, it is— 
Na 30°7 % 
a 8-1 9, 
Cl 473%, 
CO. ie}, 
SiO rs % 
100-0 
The salinity is 1350 parts per million. This pool is the 
only known locality of the blind prawn Typhlocaris and a sample 
for analysis was therefore collected by Dr. Annandale on October 
28rd, 1912. His description of the place is as follows :-— 
‘* The octagonal pool in which 7'yphlocaris occurs is situated 
about 200 yards in a direct line from the edge of the Lake of 
Tiberias, in a little plain containing other springs of varying 
salinity and temperature; it is probably the largest pool in 
the immediate neighbourhood of the lake. The circumference (if 
the eight sides be equal, as is apparently the case) is 58 metres, 
and the greatest depth of water is stated to be in spring about 
3 metres; in October it was 6 to 10 cm. less. The local name 
of the pool is Birket ’Ali edh Dhaher, ’Ali edh Dhaher having 
been a local robber-chief of the eighteenth century, who is said to 
have repaired many buildings in the neighbourhood of Tiberias. 
A description of the pool is given in vol. I of the Memoirs of the 
Survey of Western Palestine, another in the unabridged editions 
of Thomson’s Land and the Book, and a third in Masterman’s 
Studies in Galilee. The water is entirely enclosed in walls that 
are clearly of two different dates, the lower part being of large 
well-dressed stones, and the upper of much smaller and more 
irregular stones covered with plaster, of which remains still exist. 
1 ** Wissenschaftliche Studien am Toten Meer und im Jordantal,’: 
p. 344. Berlin, 1912. 
