... jungle. The anti-malarial measures takenhad been most successful, and would set up a st'andard toaim at in future work. Attention had been drawn t o the difficulties of constructing the cofferdams, the first of which appeared to have taken 15 months to complete. The original design was based upon...

...[,Minutes of century there wasconsiderable alarm engendered in mining circles owing to the large number of cases of I miners ansmia occurring inthe coal-mines of Westphalia andthetin mines of Cornwall. This disease wasdiagnosed by Dr. J. S. Haldane to be of tropical origin and known as ankylostomiasis...

... thatthedepthtothe rock-surface inthe centre of the valley was 196 feet, or rather more than threetimes thedepth contemplated bythe original contract drawings. Subsequentexcavation showed that the actual rock-surface was a t a slightly higher level. In the same year, Mr.McCulloughwas taken seriously ill. His illness...

... of 27 long tons per square inch. The great advance thathad been made in bridge-cable wire since thedate of the original Lambeth bridge was apparent,asstandard practice, in suspension-bridges a t present being erected in Canada and in the United States, called for acid open-hearth cold-drawn wire...

..., remarked that one sentence thereinrequired a litt.le further elucidation, namely, the statement that From the results of the borings, it became increasingly apparent that the building of a reservoir in the Silent Valley was far beyond the scope of the original contract. Thesiltcontainedvery large...

... the reasons why the true extent of the work was not disclosed by the original investigations ? Although the depth below ordinary ground-water-level to which work had t o be carriedwasvery considerable, the total quantity of pumping was not excessive ; could not the trench have been excavated with the aid...

... constitution, andas difficultiesaroseconcerning the interpretation of the concession of 1925, a fresh agreement was concluded in 1931 between theIraq Government andthe Iraq Petroleum Company,whichmodified in some respects the original concession. The primary conditions were that the concessionaires, in return...

.... The cofferdam across Buttermilk Channel wasof timber construction, similar to the original cofferdam (Figs. 4, Plate 12). The surface of the bottom of the channel was rock, and consequently the sheet-piling could not be driven ; a 2-foot trench was therefore excavated in the rock, the timber sheet-piling placed...

... for the original A s w h suddsa, lthough the Bab-el-Kebir, for example, would have necessitated special application. The sealing of the planking of the A-frames referred to by Mr. Legget was effected where necessary by caulking, and on cofferdam No. 2, where the boards were exposed to the sun for long periods...

... " gunited," a procedure not contemplated in the original scheme. He would be glad to hear Mr. Hellstrom's remarks on that point; did not Mr. Hellstrom think that a slightly thicker slab with lighter reinforcement would have been more economical for a tropical job ? Thesubject of waterlcementratio...

..., and to endeavour to correlate those physical properties with the behaviour of stones in use. The testing of the mechanical properties of road-stone, as a means of determining its suitability for use, was carried out on more or less standard lines in America, on the Continent, and also in England, and the original...

... was originally anticipated, and so, in place of the pitched slopes to the excavation originally proposed, retaining-walls to hold the hillside had to be built. In places quite large areas of shale rock were exposed, but it was found that during the winter weathering occurred, and it was not considered desirable...

... in contactwith each other. They did not mention that many belt-driven rolls (in which he thought that the Krom roll was the pioneer) were drawn together instead of pressed together, as in the original Cornish rolls. Some valuable information regarding crushing rolls had been given by Mr. Philip Argall.1...

..., and the parapet formed a stop for the big blocks. Incidentally, it gave asmooth walk out to the boIlards. Originally it was intended to have a pell-mell breakwater, butthe stone on thetop was the weakest spot, and might easily have been washed over inside the harbour. That top stone would have had only its own...

... fine, havinga modulus of 1.9. Theadmixture of the stone-dus(tmodulus 3-3) was thus advantageousT. he fine sand was used because it was thought to produce a more watertight concrete, but experiments withthe mix, which originally consisted of 9 cubic feetof sand and15; cubic feet of stone, showed...

... paving throughout and designed to be overtopped in flood and, owing to a rather low formation-level, traffic a t each of them suffers considerable interruption in therainy season. The bridge a t Mandla consisted originally of eighty spans of 20 feet constructed of lime concrete. It was seriously damaged...

... compared the caissons which he had then designed withthose Sir George had used ; Sir George's caisson was of exactly the same type as thatwhich he had designed, although it was longer. His own problem had been much more difficult. The late Mr. Joseph Locke, Past-President Inst. C.E., had built the original...