003 Unsoiling, per super. yard, without carriage. 0 11, 0 3 (If beyond that distance, add proportionally.) Soiling slopes of embankments or cuttings Forming surface level of road for ballast Forming face of cuttings and embankments for soiling Forming drains each side of roads in cuttings, per yard lin: 0 4,0 10 . 03, 06 cubic yard BRICKWORK. NOTE. The following prices are calculated at £14 per rod, taking the bricks at forty shillings per thousand, delivered at the works, including profit. For every shilling more or less, add or deduct per cube yard, fivepence halfpenny. Brickwork, in mortar, per Ditto, in Roman cement NOTE.-Cement, asphalte, or hydraulic cement, laid over arches, per yard superficial, from one shilling and ninepence to Clay, well puddled, and laid over arches 6 inches thick, per sup. yard . 0 2 9 028 The average price of stone in England, fit for building purposes, may be estimated at four and sixpence per cubic foot when in the rough state.* * For the above particulars the author is indebted to the courtesy of Mr. Weale, 59, High Holborn, who furnished him with some of the proof sheets of a work now in the pressentitled "Engineer's Pocket Book for 1847." TRANSVERSE STRENGTH OF WOODS. A valuable article has appeared in the military repository, embodying in a table the results of a series of experiments performed on this subject, (transverse strength of woods) at the gun carriage agency Kásipur (Cossipore). The woods selected were Bengal Sundria, (Soondree) Murany Sál, (Morung Saul) Gorakpur Sál, (Gorukhpore Saul) Rangoon Teak, Java Teak, Pegu Teak, Bombay Teak, Murany Tun, (Morung Toon) Bengal Deal, Norway Deal, and American Ash. The pieces experimented on were each seventy-two inches in length, two inches square, and sixty inches between the points of support. Amongst other results it appears that the Bengal Deal, though unseasoned, was equal to the Norway, each breaking with seven hundred and twenty pounds, and with a deflection of two and a half inches. The great range in the strength of Teak is one of the most curious and valuable of the results. The extremes are Rangoon and Bombay or Malabar 1175 and 591 pounds giving a ratio of 2:1. Both woods were seasoned. The highest value of Bombay Teak was 889 pounds,* * British oak ranks next to Rangoon Teak in transverse strength. The iron-wood of Arracan is approved of by the Railway Commission for sleepers, but little is said as to its qualities, and nothing as to quantity or price. (1846). Bengal Súndri (Soondree) is the strongest wood tried, and required 1384 pounds to break it. Murang Sâl (Morung Saul) is the next, 1319. It appears in general that the woods are stronger for being seasoned; in the case of the Sundri (Soondree) the difference was remarkable, 1384 and 992 or 75. The greatest range of Sâl Chaokars (Saul Chowkers), and Daokars (Dowkurs) was 1319 to 1179, when seasoned; unscasoned it did not go below 1085-Murang Sal Battis (Morung Saul Batties) gave only 787. Tún (Toon), not seasoned, 667, and American ash 483.* • Gleanings in Science, Calcutta, March, 1829. *Population of Great Britain, by last census, per square mile, was 240. (1846). STAPLE ARTICLES OF COMMERCE OF BENGAL. Estimate of the quantities of some of the staple articles of commerce annually imported into Calcutta from the country West of Rajmahl for exportation and local consumption, from the best informed Mahajuns (native merchants) engaged in the trade. N.B. Besides the above there is an innumerable variety of other imports that cannot possibly be estimated, such as Mirzapore carpets, cashmere shawls, scarfs, coarse piece goods, &c., but which constitute a large and valuable trade, yearly increasing.* *The above statement is compiled from the valuable pamphlet of Mr. R. M. Stephenson, and by recent advices from Calcutta, it is estimated by English merchants that upwards of one hundred tons of grain, besides other kinds of provisions, and live stock, would be conveyed daily by the Rajmahl line for the Calcutta market. (1846). |