HUDLESXON: GEOLOGY OF PALESTINE. 
211 
that the numerous hot springs in the Jordan valley have supplied a 
large quantity of the saline matter ; and we know that the one at 
Emmaus contains bromine. During the long ages when the four 
extinct lakes were in existence, their waters were relieved by constant 
deposits of common salt and gypsum, but so very soluble are the 
haloid salts of magnesium, that these have not even yet been deposited 
in any appreciable amount, and, although the present lake yet 
continues to deposit cubes of salt and lenticular crystals of selenite 
in the marly mud which is forming at the bottom, it would seem that 
magnesian salts still remain for the most part undeposited. Thus 
the present Dead Sea contains the magnesian chlorides and 
bromides, not only of its modern affluents, but those also of its 
four progenitors. 
The deductions which the chemical geologist is enabled to draw 
from these facts, are not the least valuable among the many marvels 
of the great Syrian fissure. 
EXPLANATION OF PLATE YII 
Fig. 1 . — Ammonites syriacus , Yon Buch. Lebanon. 
Fig. la . — Portion of back of same specimen. 
Fig. 2 . — NerincEa cf. gemmifera , Coq. Abeih, in the Lebanon. 
Fig. 3 . — Nerincea cf.Goquandiana, d’Orb. Abeih, in the Lebanon. 
Fig. 4 . — Pholadomya Vignesi, Lartet. Judsea. 
Fig. 5. — Procardium , species. Abeib, in the Lebanon. 
Fig. 6 . — Trigonia scabra, Lamarck. Abeih, in the Lebanon. 
Fig. 7 . — Exogyra olisiponensis, Sharpe. Judsea. 
Fig. 8 . — Cidaris glarularius, Lang. Lebanon or Hermon. 
