Definition of convergence:
crossroad, convergency, product, parallel, crossway, conjunction, affinity, merging, parallelism, common denominator, similarity, concurrence, point of intersection, coincidence, intersection point, converging, connect, equilibrium, concourse, lap, conflux, carrefour, resemblance, edge, junction, confluence, nearness, crossing, confluence, gathering, intersection, overlap.
In the department of Entomology much has already been achieved; but an extended area still invites future explorers; and one which the Notes of Mr. Walker prefixed to the List of Insects in this volume, show to be of extraordinary interest, from the unexpected convergence in Ceylon of characteristics heretofore supposed to have been kept distinct by the broad lines of geographical distribution.- "Sketches of the Natural History of Ceylon", J. Emerson Tennent.
He also discovered the method of turning the arches and cross- vaulting of ceilings, taught how floors are to be foreshortened by the convergence of the beams; showed how the artist must proceed to represent the columns bending round the sharp corners of a building, so that when drawn in perspective, they efface the angle and cause it to seem level.- "Anecdotes of Painters, Engravers, Sculptors and Architects, and Curiosities of Art, (Vol. 2 of 3)", Shearjashub Spooner.
- "Darwin and Modern Science", A.C. Seward and Others.