LECTURE The THIRTEENTH. GENTLEMEN, THAT I might better illuftrate by Example the Subject of my laft Lecture, I have here connected together the Profile of a Building compos'd of different Proportions, which might be extended to a far greater length by continuing the Range in Breaks after the fame manner, this being only 540 ft. THE Center is compos'd of a double Square, extending 120 ft.breaking forward 7 feet, and is mark'd under the Profile with a B; the Height is to ft. the Break mark'd A, is half the Length B, that is, 60 ft. and being equal in Height, is compos'd of a Square; the dotted Circles in the Profile are a fufficient Explanation: The Break mark'd C, falling X 2 falling back from the Break B, becomes a new Proportion independent of the other two, and is the Square and half, being 78 ft. long and 52 ft. high, and like the middle Part is farther defcrib'd by the dotted Circles. The next Part mark'd D, is the Square of 60 ft. and a Proportion not attach'd to the Part mark'd C, but breaks forward five feet; its Decorations are analagous to the Center. The remaining part of the Range mark'd E, is a double Square, its Length 72 ft. and Height 36, and falls back from D nine feet; the Circles explain its Analogy, and its Decorations have an Affinity to the whole. THIS Range might be still continued, by joining the Proportion F, or three and one, confifting of three Squares, the Length 120 ft. and the Height 40 ft. and, to terminate the whole Range at each End, I would place a Square of 36 ft. with a fmall Tower, fupported by Columns of the Corinthian Order, with a Dome on the Top; the whole would then make an elegant and magnificent Defign, its Length would then be 852 fr. I at first propos'd to delineate the whole Range, and to have added a General Plan of the principal Floor; but the minuteness minuteness of this Volume, the Trouble and Inconvenience of folding Plates, prevented that taking Place; befides, the omitting this Part, will doubtlefs engage fome of you to try what Effect that Addition will have to the whole Range, and what Beauty fuch Proportions connected together will produce. To analogize and terminate the Range, the Cupola on the Center mark'd F, is 22 ft. Diameter, circumfcrib'd by a Circle, and is the Proportion Unifon, or a Square. THE Drefs and Decoration of this Profile have been fparingly applied, and have been my leaft Care to preserve, because the Parts being fo minute, cannot represent the Form of the Members; therefore I would have the Ingenious Theorist take any of thefe Proportions alone, and draw 'em to a large Scale, preferve the fame general Magnitudes, then decorate the Parts in the most profuse and luxuriant manner, and fee what Effect Ornament has upon an elegant well-proportioned Defign. To carry this ftill further, let him take each Part drawn to one Scale, embellifh them with Ornaments even to Lavishness, and differently, then place them together in the fame Order as they are here X 3 done, done, view them join'd in one Range, examine them feparate, tranfpofe them to different Places, and in whatever View you place them join'd or feparate, I believe every Part will be found to have their peculiar Graces: Nay, even void of Decoration or Drefs, PROPORTION must infallibly give Pleasure to the Eye. IF you turn back to the 75th Page of my firft Part, Lecture the Fifth, you will find the Cube, the Cube and half, and the double Cube, &c. confin'd within certain Limits. I am here to obferve, as they are not confidered as Cubes when join'd with other Proportions to conftitute a Range, therefore thofe Proportions are not under fuch Reftrictions as they are when only confidered as the Square, the Square and half, and the double Square, &c. but each of these are under limited Magnitudes: The Square in Profile should never exceed 70 ft. the Square and half 100 ft. Length, nor the double Square 140; the Proportion three and one fhould not exceed 180 ft. Length, &c. Thefe are to be obferved when any of them are used as Squares, &c. in a Range to form a long Extent of Defign. THUS |