rom itsubtract each of the sides, multiply the fourresults together, and extract the square root ofthe product; this gives the number of squareunits in the triangle. For instance, let thethree sides be 5, 6, and 7 inches, the half is 9,which, diminished by the three sides respective-ly, gives4,3,… … _ Noiseless Carriage Wheels.—An inven-tion for making wheels of the above descriptionhas just been patented by Mr, A. Smith, C.E.,of Millwall. The improvement is effected byforming the tyre of numerous layers of galva-nised plate iron lapped together, and re-galva-nised in the mass ; the…
Design · Decoration and ornament · Art
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![An illustration from Magna Britannia; being a concise topographical account of the several counties of Great Britain. [With copious illustrations.] vol. 1-6. L.P (1806)](https://img.insideoutlibrary.com/img/200/bl-bl_004159563_4-111-2.webp)
