214 C. Lyell on the Formation of Volcanic Cones. 
water contains, at this distance (about eighteen degrees) from the _ 
equator, the greatest amount of salt in solution; more than the — 
water near New England, and a good deal more than the sea 
immediately under the equator. This remarkable fact has been 
iate neighborh 
ce upon the composi- 
5 Sa 
* of the water, when passing from that deeply saline ocean into 
: fresh water. The case is different with those sea-fishes of New — 
England and Germany which enter rivers; they have always to 
26 pass through brackish water, and thus the change is effected — 
Arr. XXV.—On the Formation of Continuous Tabular Masses — 
of Stony Lava on Steep Slopes; with Remarks on the Mode oF 
Origin of Mount Etna, and the Theory of “ Craters of Elevation; 
by Sir Coartes Lyn, F.R.S., &.+—(Abstract.) 
THE question whether lava can consolidate on a steep slope, 8° 
as to form strata of stony and compact rock, inclined at angles 
of from 10° to more than 30°, has of late years acquired consid- 
