CONTENTS. 
Page 
Art. I. On the Foraminifera of America and of the Canary 
Tslands, . - : : - 1 
II. Observations on Jerusalem, ’ : Ape ie: 
I. General Topography, ; : 13 
II. Climate, : F : js 17 
III. On the Apples of Sodom that grow on the shores of 
the Dead Sea, _ . A . 5 20 
I. Mr Lambert’s Account, 20 
II. Dr Robinson’s Account, ’ 2 24 
IV. On Tropical Miasmata, . : 27 
V. Researches on the Variations which take place at 
certain periods of the day in the Temperature of 
the Lower Strata of the Atmosphere. By Pro- 
fessor Marcet. ‘Transmitted by the Author, 34 
VI. Account of the Island of St Kilda, chiefly with refe- 
rence to its Natural History; from Notes made 
during a Visit in July 1840. By Mr Joun Mac- 
Gittivray, Member of the Cuvierian Natural His- 
tory Society. .Communicated by the Author, 47 
VII. On Fresh-water Polypi. By M. Coster, 70 
VIII. American Geology—Erratic Blocks—Glacial Ac- 
tion, 7 ; 74 
IX. On the supposed Stinging Organs of Medusx, and 
the occurrence of peculiar Structures in Inverte- 
brate Animals, which seem to constitute a new 
class of Organs of Motion. By Professor Ru- 
DOLPH WAGNER of Gottingen, 80 
