geology AND MINERALOGY. 
57 
Having thus noticed the building- on nP t 1 n , 
edge of the crater, and turning our°attenti h ® ls ! i and to the P resent 
horizontal, beds of lava, highly felspatlnc in ft ^ * ‘° Se thl ? k ’ alm0st 
appear on the eastern side of the Island lm ’ composition, which 
Horse Point, we cannot resist comity to the To at 
Island was at one time very much c ° nclu sion that the 
altitude not far disuh’' 1 ' < br0ad thiok Ia y era at a lower 
eastern coast, tao™ ^hT’p -T 1 * he pr °™“ tOTy » the 
the last remnants Tf ? T Polnt ' fu “ 1 Holdfast Tom, we see 
recent of all and once” o reystone lavas, which were the most 
this volcanic pile bit " ^ ' ™'T i **« wl| ole mountain top of 
exists. Portion ' of wf left it as it now 
remain, in ‘Z b l e T,u ““ ” ten « “-her, still 
down to the sea It Ho, P w *0® ^ wh “» they reached 
the remainder of the r, t 'n 
crvs+oir pi 16 COasd ‘ rhe y ar e composed of a very finely 
marl nrol ^Y^oue lava, separated by beds of white 
+ ’ P i i’ Ced t U ’° Ugh the decomposition of the lava itself and 
traversed by veins of pyrolnsite or black oxide of m“an“ 
OJ incline seawards at an angle of one to two degrees” The 
greater the altitude at which this lava exists, the more his it pa™, 
“‘tlwh°ilt Wlli n h l 0lay * 0r T UlraS exem Pllfying the facility 
Wluch /t would, by atmospheric action be removed from the 
hrg est parts of the Island. The few fragments which sti “main 
ie 5 cry summits of Great and Little Stone Tons as well 
the loftiest portion of Horse Point itself, show S Z \ ^ 
produced upon it by the higher regions. J lufluence 
othe“pIrJsof f rfr d“ ‘r rf “■ POrt! ° n ' differi, ’g 80 m “h 
was par t If » o . / ’ r " g ', Vm rise “> that it once 
X„ P ™, Could we glance at the Island as it stood 
high lit T° T ' T ' We S, ' 0Ul<1 See ifa mo "“ tai " P“hs rising 
gh into the clouds, a thousand feet perhaps, or even more above 
other slotf^ al * ltude ■ ihe ™ter lying on one side, and 'on the 
hei sloping plains, stretching several miles further out to sea than 
