APPENDIX. 69 



The reservoir on the heights of Quintzet is dug out of compact 

 clay, which is coated with cement. Its dimensions in the clear 

 are respectively 36 ft., 20 ft., and 300 ft., the contents of which 

 will equal 1,307,537 galls. The surrounding walls measure below 

 3:r ft. in thickness, and above 2 ft. only. 



With reference to the cast-iron mains, the quantity required 

 measures 12,467 ft. Of these, 7,218 ft. are required for the lifting, 

 and 5,295 ft. for the downward conduit. There were five tenders 

 for contracts to make these, but the one from the firm of L. v, 

 Eoll in Solothurn was accepted, under the following special con- 

 ditions. The pipes for the uplifting are to have a diameter in the 

 clear of 0"40 metre, and those for the downward conduit are to be 

 0'43 metre in the clear ; and the thickness of the pipes are to be 

 relatively in proportion to the pressure, in three series. 



To this end the first series (A) for the uplift mains is to be for 

 3,444 ft., with a thickness of two-thirds of an inch ; the second 

 series (B) is for 1,968^ ft. with a thickness of half an inch ; and 

 the third series (C) for 1,804^ ft. of 0'45 inches. And for the 

 downward piping, the first series (D), is for 984 ft. with a thick- 

 ness of 0"43 inch ; a second series (E) is for 984 feet and 0"45 

 inches ; and a third series (P) to be 3,281 feet with a thickness of 

 0"59 inches. This arrangement for the piping is after the same 

 system as that adopted by Mr. Eitter in his waterworks erected 

 at ISTeufchatel. This system of coupling the pipes together 

 admits of their expansion and contraction, according to the 

 changes of temperature, without risk of separation or of leakage. 



Before the pipes are to be laid, every separate pipe is to be 

 tested for pressure, and besides this the contractors are placed 

 under a bond to guarantee their soundness for three years. The 

 delivery is, by contract, to be made in January, February, and 

 March, and must be completed by the 15th of April, 1873. For 

 every day that the contractor may be behind time he has to 

 endure a penalty of £4, and until the expiration of the three 

 years guarantee time the sum of £200 will be kept back from 

 the payments, but such sum is to bear 5 per cent, interest when 

 paid. With respect to the prices paid, a uniform rate was given 

 for both calibres, of 46 francs (£1 16s. 9d.) for the running 

 metre of the piping, and 300 francs or £25 per ton for the 

 union flanges, delivered free in Freiburg and laid down. After- 

 wards comes the cost of the erection of the mains, which will 

 amount to £7,000. 



The branch piping will be laid on by degrees, and in propor- 

 tion to the growing demands of the population. By the contract 

 entered into with the town authorities, the whole of the water- 

 works are to be finished, and to be ready for use, by the 1st of 

 October next, 1873, at the latest ; and by same contract the price 



