Show squaring tho circle on oil the ath of august says the london J edmac E Parker Rhodes had exhibited t to a few at andersons Ander sona hotel fleet Street ati invention by which lie claims to be able to du do what mathematicians have vainly attempted for two thousand years namely na niely to square the circle Hs 1 I 1 3 belaev ea also that his invention will prove useful in education and to professional and aud commercial men as it will enable them immediately and without calculation cu lation to ascertain the exact square of any ally area however irre irre gular in shape tho tile appliances used are extremely simple being merely a quantity oferall of small shot and a shallow square trough with which and an all adjustable right angle squares of various sizes may be made when the square of a given circle is required the latter is cut in some settle hard material the tile circle thus formed is placed on a level blab and case filled with small shot none of which are ake allowed to bo be above the tile then the tile shot are placed V iu in the shallow trough and tho the right angle augle adjusted till tm they ex exactly betly fill t the square formed by the tile right angle and the corner odthe of the trough troug li this is the square of the circle into which the shot were first measured when the square of an irregular area is required the process la is somewhat similar if tor for instance a at surveyor were dealing with a piece apiece of land of many angles and unequal sides he lie would make a small drawing allf of its outline to scale as the tile professional phrase goes he ile might then cut the figure out in cardboard the thicker the better and anil fill the holo bole formed in the cardboard with shot the area covered by the latter after would afterwards Js be measured by means of the tile right angle and shallow trough mr parker rhodes did not demonstrate yesterday the tile mathematical acau racy of his process but he lie main pained that diat such demonstration was practicable and lie discovery freely to all who may choose to adopt it certainly it seems likely to be practically useful ihnot theoretically perfect |