EDD

346

EDD

“ The surface of the rock is shown, as supposed to havebeen for ages past; except where it is visibly altered byman’s hand, chiefly within the circular area of the late build-ing. The flat treads of the steps cut by Rudyerd aremarked D ; the upright faces of the steps F ; and E denotesthe spawled parts, parallel to the grain of the rock.

“ ab c def g h show the remains of the cavities of eightof the twelve great irons fixed by Winstanley ; of which thestump of one only, viz., that at e, remained for my inspection;it was run in with lead, and had continued fast, till inplanting a dovetail there it was cut out, and found club-ended. Which of the other holes, that are left unmarked,made up the remaining four, I could not make out; asdoubtless several of them appertained to the additional workthat he fixed in the fourth year.

“ Figure 3. A pair of Rudyerd’s iron branches, to a scalethree times larger than that of the plan ; wherein a b is themain branch, or dovetail part; CD the key, driven hard in,but without touching the bottom; their depth in the rock isdenoted by supposing the line e f its surface. The holes inthe branches served to fasten the timbers, by large beardedspike-bolts. Of those branches I traced thirty-six originalpairs, of different sizes ; and two more modern : their placesare shown in the upright, Figure 2, by inspection ; and like-wise in the plan, Figure 1, at 1, 2, 3, 4, 5, and 6, 7, 8,9, 10, &c.forming a double circle; also two pair of them at k, to fixthe mast, on two sides, to the centre. The irons that remainedin the rock, are distinguished in the plan by being hatchedwith slant lines, the empty holes or cavities by being black.Those that remained whole, whether fast or loose, are dis-tinguished in Figure 2, by their shapes.

“ x. The place of the cave on the east side.

“ r. A strong ring-bolt, put into the rock on the recom-mencement of the building in 1757, for fastening the westernguy-chain of the shears.

“ Figure 2, r s t v w. The three-legged stool, steadiedwith cross-braces. Upon the middle of the upper roundplank r s was screwed down the theodolite T, to whose indexwas screwed the long horizontal rule t s, divided into feet,inches, and parts, upon one edge, tending to the centre.Upon any marked point of the rock to be ascertained, sup-pose x, the rod x y was set upright by a spirit-level, and waspreserved in an upright position by two small slips of deal,applied as shores or struts, in two different directions. Thedivided edge of the rule being brought against the uprightrod, was shoved up by a short staff, held in the hand tightagainst the rod, till a spirit-level laid upon the top of the ruleshowed it to be level. In this position the index would showthe degree and minute of the circle ; the upright rod wouldmark the distance from the centre upon the rule ; and therule would mark upon the rod, how much the intersectionwas above its bottom at x.

“ Plate II. No. 1.— South elevation of the stone lighthousecompleted upon the Eddy stone in 1759.

“ A. The landing-place.

“ b. The cave in the east side of the rock.

“ c. The steps cut to mount the rock to the entry-door.

“ d. An iron rod, serving as a rail to hold by, in passingto the foot of the ladder, occasionally put out from the entry-door at E.

“ No. 2.— Section of the Eddystone lighthouse upon theeast and west line, as relative to No. 1, supposing it the low-water of a spring-tide.

“ In the section of the rock, a b shows the upright face ordrop, marked with the same letters as No. 1, and the lineb c shows the general direction of the grain and slope of therock to the south-westward.

“ The dotted line a b shows the level of the gto nei®first stone The black line c d is the base of , ^ e9 t lin e |the first course that is intersected by the east an . ^ed 0and ef 1 is the level of the top of the first course, 0 f tl' ethe second ; 2, 3, 4, 5, and 6, mark relatively thesix courses that bring the artificial part of th e , . «6/’upon a level with the reduced top of the natural r ^ ggV , e utbeing the first entire course, marked VII. as beingabove the ground-joint. j g sbo ^ a

“f The foot of the temporary ladder; and thethe manner in which the ground-joint of the stonesunk into the rock, all round, at least three mohei 3 * t

“ h. The first marble plug, or central jogg e t ’j iro ugbthrough the sixth course, and reached half-way -yff-seventh ; and so in succession to the top of Co u .j ketW ee ,“ i k. The place of the marble cubic joggle® 111 to a °each two courses, which were in an octagon dtspothe centre. . , oU rse-, •.

“ l. Smaller cubes between the fifth and sixt oD it 1“ Course XIV. terminates the entire solid ; a tenJ por a V,pitched the entry and well-hole for the stairs. 1 1 wan te ’ladder,/ g, to the entry-door D, is only put out w ^ eT tin 1 ^and then is lashed by eye-bolts to the stone ; a n g in t 1having a joint in the middle, it folds, and is lai

en try. ston e ^ el gl

“ Above the top of the entire solid, the centre^^ w er6 r ,omitted to give space for the well, the cubic g

double the number, and half the size. Com 9 ® , t and * l6 e jminated that part of the building called the so jjjg 1°"'the habitable of the building began, whereolstore-room.

“ f. The store-rodm door.

“ G. The upper store-room. ff jj

“ n. The kitchen. , o „. n ds tW°%

“ i. The fire-place, from which the smoke a ^ tb r ° 0the floors and lantern, through a copper funne ,the ball.

“ k. The bed-room.

“ L. The stone-basement of the lantern.

“ m. The lantern door into the balcony.

“ n. The cupola.

“ The ascent from room to room isthrough the middledetached figures show the means, byremovable at pleasure, .

“ Plate III.—Plans of the rock after being

erfon

■otio;

by the P e: 0 ■

or key-stone of every.v t.lip. mpiins. bv inclifl® 0

cut, a f fyipr

. the s® ™

pared to receive the stone-building. Showing ^

dation courses. j far th e . (e t

“ Figure 1. Plan of the rock, as prepar ,. gg to gr fiicSwork, somewhat extended, to show how it a P^ re the sThe line a b shows also here the place w ^ g( j

drops, as specified, Plate II. No. 2. . place; aS ,

“ In this figure, Course I. appears in 1 sh*d e ’ t

The part da^ /

with its trenails and wedges,marked d d, was not reduced to

dovetail

the

j-e:

:St

inai 1\GU ±j aaj r» cio uvt j. \_,v» uvo« tiiau C-

fissures, but was sunk two inches lowe the*? 1Course II. The stones laid therein wo ^ f(;r y d' 1 jjn 1encompassed by a border, and held fas ' te tl> e c

nil _ , T.T r. • -11 .1,„ figures. ,i„irtn B

for e . „

di<S

The letters E. W. N. S. in all the figures, '^ enot ing

points; the same letters, in every fig uie »parts,

abo* e

the s “-

“ The part of the rock marked C, rises . > |eS , a^- 0l j'an ascent, or step, of fifteen to eighteen 1 ^

the line dfge; which, lying somewha a j)ut

contour of the building, and affording a ^ g rs t a uadvantage was taken ; and the work ocourse carried against it, as shown at G-