DE S
554
D E T
Decempeda, i. 228. •
Decimal, i. 228.
Decimal Arithmetic, i. 228.
Treatise on, i. 228.
Decimal Scale, i. 231.
Decimetre, i. 231.
Declination, i. 231.
Declining Dials, i. 231.
Decor, i. 231.
Decorum, i. 232.
Decorated, i. 231.
Gothic Architecture, i. 450.
Decoration, i. 231.
Decoration External, i. 231.
Building Act on, i. 231.
Decoration of the Scenery op a Theatre, i. 232.Decorum, or Decor, i. 232.
Dedication, i. 232.
Definition, i. 232.
Theory of, i. 232.
Rules for correct definition, i. 233.
Deflection, i. 233.
Deinclining Dials, i. 233.
Delubrum, i. 233.
Temple, ii. 483.
Demi Relievo, i. 233.
Demonstration, i. 233.
Theory of, i. 233.
Demonstration, Geometrical, i. 233.
“ Mechanical, i. 233.
Description of temple at, i. 234.
| Dendrometer, i. 234.
| Denticles, i. 234.i Dentils, i. 234.
Dentils, i. 234.
Proportions of, i. 234.
1 Examples of, i. 234.
Department, i. 235.
Dep6t, i. 235.
Description of, i. 235.
Describent, i. 235.
Description of a building , i. 235.
Example of, i. 235.
Descriptive Carpentry, i. 236.
Treatise on, i. 236.
Descriptive Geometry , i. 237.
Of its nature, i. 237.
Of the projection of right lines, i. 238.
Of curved surfaces and their generation, i. 239.
The projections of a point and a right line being given,to construct the projections of a line drawn from thegiven point parallel to the first, i. 240.
To construct the traces of a plane drawn from a pointwhose projections are given, parallel to another planewhose traces are given, i. 240.
A plane whose two traces are given, and a point whoseprojections are given, to construct (1) the projectionsof the right line falling perpendicularly from thepoint upon the plane; (2) the projection of thepoint of coincidence of the right line with the plane,i. 241.
The projections of a point and a right line being given,to construct the traces of a plane drawn from thepoint perpendicularly to the right line, i. 241.
The traces of two planes being given, to construct theprojections of the line of their intersection, i. 241.The traces of two planes being given, to construct theangles formed by them, i. 241.
The projections of two intersecting right lines beinggiven, to construct the angle formed by them, i. 242.The projections of a right line and the traces of a planebeing given, to construct the angle formed by them*i. 242.
The angle formed by two right lines, and the anglesformed by such lines with the horizontal planes beinggiven, to construct the horizontal projection of thefirst of these angles, i. 242.
Of planes tangent to curved surfaces, and of normalsi. 243.
From a supposed point on a cylindric surface, of whichthe horizontal projection is given, to draw a tangentplane to that surface, i. 244.
Do. on a conic surface, i. 244.
From an imaginary point of a surface revolving upon avertical axis, and given in horizontal projection, todraw a plane tangent to such surface, i. 244.
The projections of two right lines being given, to coD'struct the projections of their shortest distance, an<*to find the distance, i. 245.
The necessity for drawing planes tangent to curved sur*faces, through points taken from the outside of then>>i. 246.
Through a given right line, to draw a tangent plane tothe surface of a given sphere, i. 247.
From a given point, to draw a plane tangent to the s ur 'faces of two given spheres, i. 250.
To draw a plane tangent to three spheres of gi ve0dimensions and positions, i. 250.
From an arbitrary point, to draw a tangent plane to 8given cylindric surface, i. 250.
Do. do. to a given conic surface, i. 251.
From a given line, to draw a tangent plane to a g* venrevolving surface, i. 251.
Of the intersections of curved surfaces, i. 252.
The generating lines of two curved surfaces beiOeknown, and all the given lines which fix such g eI,erators being determined on the plane of projection®’to construct the projections of a curve of double curvature, according to which the two surfaces inters®each other, i. 253. j
From a point taken at pleasure upon the intersectiontwo curved surfaces, to draw a tangent to such i' ltesection, i. 254.
To construct the intersection of a given cylindric ®face with a plane of a given position, i. 254.
To construct the intersection of a conic surface otgiven base, by a plane given in position, i- 256-To construct the intersection of two conic sun ^with circular bases, whose axes are parallel to eaother, i. 256. 0 f
To construct the intersection of two conic surface®whatever bases, i. 257. . aP y
To construct the intersection of a conic surface
base with that of a sphere, i. 258. - #I) y
To construct the development of a conic surface 0 jbase, and to represent upon the surface so devfia section whose two projections are given, _ >• ^ ceSTo construct the intersection of two cylindric surof any bases, i. 259. rface®
To construct the intersection of two revolving ® uwhose axes are in the same plane, i. 259.