REPORT OF THE COMMISSIONER OF AGRICULTURE. 



THE CARBONATATION TANKS. 



These tanks were built by the Pusey & Jones Company, accord- 

 ing to the drawings and specifications in Bulletin No. 8, and gave 

 perfect satisfaction. I can suggest no improvement in them, unless 

 it be the insertion of revolving paddles, to keep down the foam. 



THE FILTER-PRESSES. 



These, four in number, and of thirty chambers each, were con- 

 structed by. the Pusey & Jones Company, on the general plan of 

 the Kroog filter-press, but with certain modifications suggested and 

 patented by Mr. Swenson. Their work gave perfect satisfaction. 

 The only fault discovered in them was the weakness of the plates, a 

 great number of them breaking under the ordinary pressure. 



THE SULPHUR APPARATUS. 



This apparatus consists of an air-compressor, two sulphur furnaces, 

 three sulphuring-tanks, and three Kroog's twin filter-presses. The 

 whole apparatus was built by the Sangerhauser Maschinenfabrik, 

 and its work gave entire satisfaction. The apparatus is described in 

 detail in Bulletin No. 8. 



The whole of the machinery, with the unimportant changes noted, 

 was constructed according to the drawings and specifications j)rinted in 

 Bulletin No. 8. Their reproduction is not considered necessary here. 



ANALYTICAL DATA. 



The analyses of canes, chips, waste waters, iDurified juices, &c., 

 were made at the factory chiefly by Dr. C. A. Crampton, assisted by 

 Mr. N. J. Fake. The limestones, masse cuites, press cakes, &c., were 

 examined in the laboratory at Washington. 



The analyses of the gases from the lime-kiln were made by Mr. G. 

 L. Spencer. 



The full details of these analyses are given in Bulletin No. 14. 



Mill juices before October 1. 



