APPENDIX. 



743 



Memel timber, erected at 2^d. per superficial 

 foot, measuring over the whole surface for 

 timber, and 2^d. per foot for workmanship on 

 the same. Hothouse roofs finished, the glass 

 being 16 and 21 ounce to the foot, and in sizes, 

 3 feet long by 1 foot in breadth, at the rate of 

 Is. 3d. to Is. 6d. per superficial foot. Dench's 

 patent hothouses are, for economy in the first 

 instance, the most economical we have seen ; 

 we only regret that any timber should he em- 

 ployed in them, as all combinations of timber 

 and metallic substances are, we think, objection- 

 able. His principle of glazing without putty is 

 good, and his rate of charges exceedingly mode- 

 rate, as will be seen by his prospectus, wherein 

 he offers to deliver at any railway station or 

 wharf round London, the whole material of a 

 hothouse, exclusive of the brick wall it stands 

 on, at the rate of Is. 2d. per foot superficial. 

 The glass used being from 1 to 2 feet wide, and 

 3 feet long, fitted with brass locks, lines, pulleys, 

 quadrants, &c. ; the little woodwork used being 

 primed, and the whole marked so as to be 

 readily fitted up. As examples, we may state 

 that the cost of one of his patent houses, 12^ 

 feet long, 9 feet wide, amounts only to 

 £16, 12s. 6d., and of another, 40i feet long, and 

 16 feet wide, containing 1,123 feet superficial, is 

 £65, 10s. 2d. 2-inch Baltic timber of the best 

 quality, primed, and glazed with crown glass, 6 

 inches by 4 inches, and painted two coats stone 

 colour, we have had erected near Edinburgh at 

 from lid. to Is. Id. per foot superficial. Sashes 

 of the best Memel timber, 6 feet 6 inches 

 long by 3 feet 7 inches wide, with checked 

 astragals, and iron straining- bar, the side-rails 

 2| inches square ; the top-rail the same size ; 

 bottom ditto 3 inches broad by 2£ inches 

 thick; and astragals 1| inches deep, and 1 inch 

 thick at the shoulder, are made for us at Dal- 

 keith, to order, at 8s. 6d. each. The same 

 size of sashes, with the astragals grooved to 

 receive the glass, at 7s. 3d. each, not glazed 

 or painted. 



Carpenters' or joiners' wages per day 5s. 6d., 

 London masters' prices. Ditto Scotch prices, 

 3s. 6d. to 4s. 



IRONWORK AS USED IN HOTHOUSE- 

 BUILDING. 



The great variations in the price of iron, 

 arising from extraordinary demands, and other 

 causes, render it impossible to give a list of 

 prices that shall remain long exactly the same. 

 The following will, however, be found suffi- 

 ciently correct to enable gardeners and their 

 employers to calculate the cost of a hothouse to 

 within a pound or two of its actual expense. 



We may here also remark, that it is better to 

 contract for hot- water pipes by measure than by 

 weight, as by so doing it holds out an induce- 

 ment to the manufacturer to cast them thin to 

 save his metal; whereas, if contracted for by 

 weight, the case, in the hands of some people, 

 would be different. All hot-water pipes should 

 be cast vertically, and not horizontally. 



Scotch prices. — 4-inch spiggot-and-faucet pipes, 

 proved at 200 feet pressure, 2s. 6d., 2s. lOd. to 



3s. per lineal yard. 3-inch ditto, 2s. 3d. to 

 2s. 6d. per yard. 2-inch ditto, Is. 8d. to Is. 9d. 

 per yard. 5-inch ditto, 3s. 5d. per yard. 6-inch 

 ditto, 3s. 7d. per yard. 50 feet in length of a 

 4-inch pipe contain 272 lb. of water, and every 

 square foot of cast-iron plate or pipe 1 inch 

 thick will, upon an average, weigh 40 lb. The 

 above prices are taken from a variety of esti- 

 mates before us, furnished within the last two 

 years, and may be considered a fair average of 

 Scotch prices at the foundry. 4-inch pipes are 

 the most generally used, although 3-inch ones 

 may be advantageously employed for heating 

 pits, greenhouses, &c. The usual length of 

 hot-water pipes is 9 feet, and the maximum 

 thickness should not exceed § of an inch, and 

 such a pipe should weigh 1 cwt. 1 quarter 1 0 lb., 

 and should cost, upon an average, 8s. 6d. 

 Elbows, bends, &c, are charged by weight or 

 by double measure; and, unless of extraordi- 

 nary forms, requiring new moulds to be made 

 expressly for them, are charged at from 9s. 4d. 

 to 10s. per cwt. Gutters for ridge-and-furrow 

 roofs, and ornamental tubular columns, are 

 charged the same as above. Flange joints will 

 cost for white lead, millboard, canvass, india- 

 rubber collars, or hempen cord, including la- 

 bour, Is. 6d. each, inclusive of workmanship. 

 Nuts and bolts for ditto, as well as for putting 

 together wrought-iron boilers, will cost 4d. 

 per lb. 



London price of hot-water pipes, 7s. 6d. to 

 8s. 6d. per cwt. Ditto cast-iron rain-water pipes, 

 2 inches in diameter, Is.; 24-inch, Is. 3d.; 

 3-inch, Is. 6d. per lineal yard. Cast-iron gut- 

 ters, 4 inches in diameter, Is. 2d. O. G. gutters, 

 4 inches, Is. 2d. ; 4| inches, Is. 6d. per lineal 

 yard. 



Scotch prices. — Cast-iron gutters, or roans, 

 half-checked into each other, with screws and 

 nuts complete, 3 inches wide, 4d. per lineal foot ; 

 4 inches wide, which is safest for the front of 

 ordinary hothouses, 5d. per lineal foot. Angle 

 bends, 6d. extra each size. Rust, for joining 

 hot- water pipes, l|d. per lb. Furnace fronts 

 and doors, full mounted, 12s. to 14s. per cwt. 

 Furnace bars, 7s. to 8s. per cwt. Dampers and 

 soot-traps, mounted complete, 12s. to 14s. per 

 cwt. 



Wrought-iron small screw bolts and nuts, 4d. 

 per lb. Ditto large, 3^d. Cramps, 3d. Strong 

 brackets for shelves, 5d. Wrought-iron columns, 

 with caps and bases, 2d. per lb. We pay in the 

 neighbourhood of Edinburgh 5s. per day, exclu- 

 sive of travelling expenses, and can send excellent 

 workmen to fit up boilers and pipes in the best 

 manner to any part of the country, at that rate. 

 In England the charges are somewhat higher, 

 but we have never paid more than 6s. 6d. or 7s. 

 per day. These prices are taken when pig-iron 

 is at 38s. per ton, and malleable iron at 120s. 

 per ton. 



BOILERS. 



Boilers, for general purposes, are either of 

 cast-iron, or of plates of malleable iron, put to- 

 gether by overlapping the joints, and securing 

 them with wrought-iron bolts and nuts. They 



