EDD
347
EDD
^era :
5 8 West !
P'ece of stone engrafted into the rock, serving as
al 4 UJ(Vp a O 7 O
% v 0 b i 10 cr °ss a chasm, opened by cutting down the top of
in all these figures are shown in the same
3, 4, , 5 ; ail( l g, The level platforms, or steps, for<Vb“ er ® n t courses, whose upper sides are even with thesein Plate II. No. 2. being upon the level of Rud-.. 8 West step.
l'ft 1 ”• <L vuaoill) uptylivu lu
3p aft Cc that level, into the cave. Of this stone is formedf'ia °* ^ le I’o^er that encircles the work.
^oifd re ^ sll0 "’s how the buttress, <i, was terminated in the^ e d»B» C °* lrse- H a i so shows the places of the trenails and
are
VT r - ~
‘C c 18to
«|) ,rse supposed laid.
%<} l ® Ur ? 3 shows how the space n i k, in Figure 2, is®tep j U P in Figure 3, being confined in by the rise of the'^Sul^V 1 and the cramps a b; the ground proving herelifter shattered by cutting the steps for the former
4 shows the structure of Course IV., where, in^ttlanrt ^ le ot hers, the stones lighter-coloured denote thep. > the darker the moor-stone,tin, ,y Ure 5. The position of three joggle-holes, t, betweenng^eand the next above.
HoU " re 6 shows Course VI. complete, which brings thew ' Vm>W - ’ ’ .. ’ ’ ' - the
C-S _
rp. ^
• -the dotted lines everywhere refer to the coursecome on ; and shows how it will break joint upon
i Wo »U --w.i.j/.vvoj .. tnvu
l( ^gl e i *° a l eve l with the reduced rock : it shows^4 j'° es for the eight cubes ; and the central plug-joggle,St ° n 6 of A dace at O, ready for the reception of the centre“ pf bourse VII.
of °fj e W —Plans of all the different courses from, the(< p- le roc h to the top of the balcony-floor inclusive.
|^ti 0 opj ^' The proper j>lan of Course VII. relative to the■ e tr e ’ n e II- No. 2. As being the first entire course,
j? tk e and wedges are shown ; hut afterwards omitted
ail Wgl'ts, to prevent crowding the figures. The blacki e c dotted I' nes show the joints of the alternate courses.*W'ate] re ~ Stones ’ and ^ ie I° ur stones surrounding, were“ a. -pf °I the same size to the top of Course XIV.
‘‘ h l ,l e Ce ntre plug, first set.
' I he
it ° s e f„ ie square part of the centre stone ; from each of% , ’oiir _• _
h
t>Ur “ ,uca a uovetau projects, and thereon are fixed;. ®l°nes cc, by joint-wedges and trenails, as perto r llcdl ® ve stones united make one stone, sufficiently°jecti n ece ' ve eight smaller dovetail stones dd; and whose>r 0 p S Parts form dovetails to receive another circle, ori 11 at e ° nes > fixed like the former. The cubic joggles are
r H |e pl an °fi Course XIV. ending the funda^and on which the entry
*'i.
“‘*u, and on which the entry and well-hole are
th: * a I S0 shows the diminution from Course VII.1 K!_ , u us . . - -
SS J ?8glea
Jg /I V..W “ V ‘“ WU **‘
n gure is shown the distribution of the smaller
which take place upon the entire solid. The. appears to have a small inclination with thea to which was not noticed in the section, Plate II.
a “ bi K nities -
try, , "• The plan of Course XV. being the first ofOf *W e T and well-courses.h^ l<: eot r *’ I‘ IR P^n of Course XVIII. showing the workSS"LSH. in, and the solid re-united. Also the°fi>er- ° a .'j°' n ting the four stones round the centre to%li ^ do" 110 ' 1 ’ ’ n t ' ie courses below the entry-door, werein t j° Veta ils to the centre-stone. Joint-wedges werefrom * e * 10 °k, as per figure. Thus the arrangement, in\!o S> as e ' le centr e, was again complete. In the entry-' s > t) le Ver y piece had at least one cubic joggle and two: t j ie ' Voi 'k was secure against all ordinary attacks ofWeakness being on the east side; but when
capped and bonded together by this 18th Course, the wholewas again considered as one entire stone, out of which thecavity had been cut.
“ Figure 5 shows Course XXIII. ready for putting onthe cap-course of the solid.
“ Figure 6. The cap-course, making the store-room floor,in its finished state ; the first course of the habitable part ofthe building, viz. Course XXV. being upon it; and show-ing the store-room door, with its joggles, joint-stones, andcramps.
“ The detached figure, relative to it, shows a part of thetop of the wall of Course XXV. to a triple scale; whereinli It i i denote one of the pieces of stone, whereof sixteencomplete the circle : f shows one of the joggles used in thispart of the building ; being slices of marble, the size of acommon brick, let half its thickness into the middle of thestone; so that the next course above, breaking joint uponthe middle of this, according to the dotted line gg, half thejoggle’s length will take one of the upper stones, whose jointcomes upon it, and the other half joggle the other : by whichmeans every stone is fixed to its place, as it were, by twosteady pins, one at each extreme. The black lines, h i,showing the joint at each end of this stone ; the small lozengefigures, k and l, show the shape of grooves, cut from the topto the bottom of each end of each stone, and which, whentwo are joined together, form that figure: k denotes thelozenge empty, or unfilled, and l the lozenge filled with a joint.stone.
“mn. The shape of one of the cramps, in upright; andop as seen upon the flat. The holes in the stones at qr arebored, to receive the round shanks of the cramp, and therectangular cavities q r are sunk, to bury the flat of thecramp op.
“ Figure 7. The plan of the kitchen floor, and the upperbed of Course XXIX. that encircles it; showing one of theendless chains; of which, as appears in the section, Plate II.No. 2, there are two to each floor. The detached figureshows an enlargement of the chain, and groove that con-tains it.
“In the principal figure, the dotted lines at s show theplace of the fire-grate.
“ 11. The sink.
“ v v. The dresser.
“ w id The settle.
“x. A place for a claw table, leaving a vacancy to thewindow between each.
“ Figure 8. The plan of the bedchamber, taken upon thetop of Course XLIII. which gives the horizontal sections ofthe windows.
“ yyy• The places of the three cabin beds for the light-keepers.
“ z, The hole in the floor for the copper funnel from thekitchen.
“ a. The place of the clock.
“ In the detached figure, b b shows how the cramps aredisposed in the reduced jambs of the windows.
“ c. The plan of the rebate, to receive the shutters, orports of the windows, whereof the uprights are seen inPlate II.
“ d. The sill of the clear opening; against the solid ofwhich the window frame ef and sashes are lodged ; the wholeof which go in together, and are held in by wooden pins, twoabove and two below, as shown at gg'. the holes being boredin the solid stone. If those pins are cut off, the whole canbe drawn out and renewed, without injury to the stone-work.The joint of the wood frame with the stone-work is securedagainst wet by white-lead and oil.