377 



1. Brine spring near Usdum with fish. Temp. 90° F. Spec. 

 grav. 1-035. 



2. North End near Jordan, Temp. 83° F. Spec. grav. 1-196. 



3. Dead Sea, Usdum, South End. Temp. 83° F. Spec. grav. 

 1-204. 



4. EI Lisan (Peninsula), North End. Spec. grav. 1-200. 



No. 1 smelt strongly of sulphuretted hydrogen, and contained a 

 good deal of suspended matters. No. 2 pretty clear ; less sulphu- 

 retted hydrogen. Nos. 3 and 4 clear, and no sulphuretted hydro- 

 gen. 



I remain, 



My dear Sir Roderick, 



Yours very sincerely, 



A. W. HOFMAN. 



Sir Roderick Murchison, 



Calculated evaporation from the area of the Dead Sea at temp. 

 84° F. (58-6 dew-pomt) 1,500,000,000 gallons, or 6,500,000 tons. 

 Assumed area 320 square miles (H. Poole). 



3. Descriptions of Nineteen New Species of Land-Shells, 

 FROM Mr. h. Cuming's Collection, collected by m. 

 Ghiesbreght AT (Jhiapa, Mexico. By Dr. L. Pfeiffer. 



(MoUusca, PI. XXXVI.) 



1. SiMPULOPSis Chiapensis, Pfr. 5". testą depresse globosa, 

 tenuissima, confertim striata, nitida, pellucida, cornea ; spira 

 minuta, parum prominula ; sutura canaliculata ; anfr. 2\ con- 

 vexis, ultimo magno ; columella tenui, arcuata ; apertura dia- 

 gonali, lunato-circulari ; perisi, simplice, recto, margine dextro 

 superne subrecedente. 



Diam. maj. Sį, min. 6^, alt. 4^ mill. 



2. Helix helictomphala, Pfr. II. testą umbilicata, depressa, 

 solidu, obligue costulata, nitidula, pallide hitescenti-cornea ; 

 spira vix elevata; anfr. 5\ convexiuscuUs, ultimo antice sub- 

 dejlexo, supra medium siibcarinato, basi injlato, circa įimbili- 

 eum, i diametri fere cBąuantem, scalariformem subcompresso, 

 antice constricto et scrobiculato ; apertura diagonali, rotun- 

 dato-lunari, dente linguceformi, sublibero parietis coarctata ; 

 perist. albo, angulatim rejiexo, margine supero subhorizontali, 

 dextro et basali acute unidentatis. 



Diam. maj. 12, min. lOi, alt. 5\ mill. 



3. Helix Chiapensis, Pfr. H. testą umbilicata, depressa, 

 solidula, striata, nitida, albido-cornea, ad suturam fusculo- 

 fasciata ; spira breviter conoidea ; an/r. 5h convexiuseidis, 



ultimo antice defiexo, superne turgido, subtus constricto, basi 



