142 
THE GEOLOGIST. 
ZOOPHTTA 
Didymograpsus caduceus, Salter, Q. J. 
ix. 87. 
geminus, Ilis., Leth, 
S. 5. 
sextans, Hall, P. N. Y. 
t. 74. 
Murcliisonii, Beck, S S 
G95. 
Diplograpsus bullatus, Sail, Q. J. vii. 
174. 
foliaceus, Murch., G. J. 
vii. 64 
folium, His., G. .7. vii. 63. 
mucronatus, Hall, P. N. 
Y. t. 73. 
nodosus, Harkn, Q. J. 
vii. 62 
pennatus, Harkn, G. J, 
vii. 62. 
ramosus, Hall, sp. P. N. 
Y. t. 73. 
rectangularis, M'Coy, P, 
F. 8. 
pristis, Hh., Leth. S. t. 35 
terctiusculus, His. sp. 
Leth. S. t. 38. 
(Ilydroida) ? 
Graptolithus oonvolutus. His. sp. Letb. 
S. t. 35. 
Conybeari, Porll. G. J. 
viii. 391.: 
Griestonensis, Nicol., G. J. 
vi. 63. ^■^ 
latus, M'Cy., P/,F. 4. 
lobiferus, M'Coy', P. F. 4. 
Nicoli, Harkn., G. J. vii. 
61. 
Nilssoni, Barr., G. J. vii. 
61. 
priodon, (G. Ludensis) 
Bronn. sp., Leth. t. 1. f. 
13. 
Sagittarius, Linn., G. J. 
viii. 390. 
Sedgwickii, Porll., Geo. 
Rep. 318. 
tenuis, Porll, Geo. Rep. 
319. 
Rastrites peregrinu.s, Barr., G. J. vii. 
69. 
{To he contimmd.) 
THE SPIKIT OF GOOD BOOKS. 
NOTICES OF THE VOLCANIC ROCKS AND GEYSIES OF 
ICELAND. 
Extracted feom Lord DnrfEEiN's " Letters from High Latitudes." 
By the Rev. J. E, Yadx, A.M. 
Of all the wondrous changes which nature has wrought on the earth's 
crust, thei'e is scarcely anything that will bear comparison with those 
which meet the eye of the traveller in volcanic regions. Of the two 
great agents in Geological transformation — water and fire, the one 
moves us with admiration at the delicacy of its operations, the other 
strikes us with a^ e at the mightiness of its influences, and the rapidity 
of its work. 
