Commissioner may designate, shall have sole control and direction of the work, in so 

 far as the extraction and purification of the sugar-juices are concerned. 



Further, on the part of the Commissioner of Agriculture, it is agreed that during 

 the entire manufacturing season he will supply the services of one superintendent^ 

 namely, Prof. M. Swenson, and one sugar-engineer, namely, Mr. G. L. Spencer, or some 

 other persons of equal experience and ability, and also a competent corps of chemists ; 

 provided the company aforesaid give to said agents of the Department every facility 

 for studying the processes employed, and supply them with full and accurate data of 

 the amount of cane entering into manufacture, the quantities of sugar and sirup made, 

 and all other information which will help the Commissioner to make a full and ac- 

 curate report of the whole work ; provided further, that after the experimental work 

 above mentioned has been finished and during the time the said company operate the 

 machinery for the purpose of manufacturing sugar and sirup for profit, the Depart- 

 ment of Agriculture shall not be responsible for any other expenses than those which 

 relate to the employment of the agents of the Department above mentioned. 



NORMAN J. COLMAN, 



Commissioner of Agriculture. 

 PARKINSON SUGAR COMPANY, 

 By C. F. DRAKE, President. 



The Congress having made an appropriation of $94,000 for the con- 

 tinuance of the experiments, the following contract was made between 

 the Commissioner of Agriculture and The Pusey & Jones Manufactur- 

 ing Company of Wilmington, Del., for the construction and erection of 

 the necessary machinery. 



WASHINGTON, D. C., April 21, 1886. 



DEAR SIR : I desire to secure, for the experimental sugar station which the Depart- 

 ment will establish in connection with the Parkinson Sugar Company, at Fort Scott, 

 Kaiis., a diffusion battery. Will you kindly send me estimates of the cost of the 

 battery, in conformity with the following general requirements? 



(1) The battery to be of a capacity to work 200 tons of cane in twenty -four hours 

 at a mean rate. 



(2) The battery to consist of fourteen cells, arranged in a straight line, with valves, 

 calorisators, and connections complete. 



(3) The cells to be cylindrical, and have a discharge-gate at the bottom of the area 

 of the cross section of the cell. 



(4) The valves to be so arranged that the water can be introduced at top or bottom 

 of each cell at the pleasure of the operator. 



(5) The joint of the discharge-gate to be made by hydraulic closure. 



(6) The last charge of water in each cell to be removed by compressed air. 



(7) Apparatus for the automatic charging of the cells with fresh chips. 



(8) Apparatus for removing the exhausted chips. 



(9) Calorisators to be furnished with thermometers, with face like steam-gauge. 



(10) Measuring tanks for withdrawing juice, with accurate float-gauge. 



(11) Two cane-cutters, with vertical disks, and forced feed, with cane-carriers and 

 chip-elevators complete; these to be simply those already at Ottawa, with a modifi- 

 cation of the forced feed, to prevent choking. 



(12) Air compressor and reservoir for discharging water from cell next to be emptied. 

 In the above apparatusall the valves, piping, shafting, pulleys, elevators,&c., which 



were used at Ottawa are to be incorporated in the new machinery where it is possible 

 without disadvantage, and to be valued at their original cost price. 



In your proposals, which T hereby ask for, please give all the details of the apparatus 

 which must be guaranteed to work and give satisfaction to the Department. 



