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generated by water-power obtained at the Okeri Falls, and transmitted in the usual way through copper wires carried on iron poles a distance of about 13 miles to the motors in the pumping-house at the collecting-tank. The rising main is 19 chains long ; the total head to be pumped against is 25'3ft., and the duty about 4-horse power; but in order to meet possible requirements 8-horse power pumps will be provided. The work done to the 31st March is as follows : Excavation, 5,000 cubic yards ; 12 in. sewerpipes laid, 77 chains ; 9 in. sewer-pipes laid, 140 chains; house-junctions laid, 200 ; manholes built, 8 ; and the gross value of the work done as above enumerated is £4,106 12s. 3d. The total amount of the contract as let to Mr. Joseph Saunders is £6,826 165., therefore the work may be considered as two-thirds finished. The principal work remaining to be done under the present contract is the completion of the reticulation and the construction of the collecting-tank. The filter-beds and the electric-pumping plant will be carried out under separate contracts and the plans and specifications are now in hand. B. Hay, Engineer.

TE AROHA. Te Aeoha Sanatobium. In July, 1897, having been instructed to put in a concrete reservoir close to No. 2 bath, to obtain a larger and a hotter supply of water for the proposed new bath-house, a start was made with a party of men to bring in a low-level outfall and excavate the site for this reservoir. After going into the place proposed it was found that there were not sufficient hot springs there, and it was necessary to remove a large amount of slipped earth and get in more to eastward, where the line of springs on which the drinking-pump stands were. Several months were spent at this, and finally a concrete reservoir, known as No. 1, was finished here, holding about 6,000 gallons of boiling water, about the end of November. The site for the new bath-house, on the spur where the old band-stand was, and overlooking the domain, parallel to the pathway and some 11 ft. higher than it, was started to be excavated in August, and about the end of September the concrete foundations were put in. Next month the carpenters started, and a bath-house 98ft. long by 28ft., with a centre corridor 8 ft. wide, laid with tile pavings, and twenty-three rooms off it, nineteen of which are bath-rooms, furnished with the best porcelain baths, with all fittings and conveniences, has been completed, and was opened on the 24th May, 1898, by the Hon. Mr. Cadman. The necessary approaches, concrete steps, front balustrading, and sloping-off of the ground to give the whole a complete appearance, have been done. To provide proper drainage and to carry off all the water from the baths and stream an 18 in. earthenware pipe has been laid on from the Waihou Eiver, coming up Eolleston Street for about 10 chains, with a concrete sump just outside the domain-fence. A 9 in. earthenware pipe was then laid down to this from the new bath-house for all the closet-wastes, baths, &c, well ventilated and all laid in concrete ; also, a 12 in. pipe was connected with it to carry the surplus water from the domain, and the whole left complete. A second reservoir, No. 2, has since been put in where the old reservoir, covered in with wood, near No. 2 bath, was. It holds about 20,000 gallons of boiling water, and is of concrete with a concrete roof. Both reservoirs are now connected with pipes and valves, so that either one or both can be used or shut off. A permanent 4 in. cast-iron main pipe, laid in concrete, has been put in to supply the new bath-house from these, and at the bath-house branches into two 2 in. pipes, which go right round the building and supply all the baths. Connected with the overflows from these two reservoirs a large swimming-bath has been made of concrete, 40 ft. by 20 ft., and 3 ft. 9 in. to 5 ft. deep. This now requires a house over it, but, as there were no funds available, it has been left. A small concrete tank has been put round the spring supplying the drinking-pump near No. 2 bath. Also a concrete wall is being put round No. 2 bath itself. This, with some sanding of the pathways and roads cut up by the cart traffic, is the work done. It has all been done by co-operative labour—about £1,310 on labour alone—namely, stone* breakers, £59; labourers, £818 ; painters, £54 ; carpenters, £290; plumbers, £89 : and about the usual wages have been earned. The material (including tiles, baths, closets, &c.—about five hundred and fifty pounds' worth in all) has cost £2,550, or the whole work about £3,860. 18th June, 1898. Chas. E. Vickeeman, D.E.