592 TRANSACTIONS OF THE 



access of air to the fuel being completely controlled by tbe temperature of 

 the atmosphere, there seems to be a perfect economy of fuel. 



Fourth. The appearance of the radiator in any apartment, can be made 

 to harmonize with the style of architecture or of furniture, and with colors 

 employed in decoration. And so moderate is the amount of heat given off 

 by any part of the surface, that the most costly articles of furniture are 

 uninjured by it. 



The points of excellence which we particularly notice are, 1st, the mode 

 of obtaining large radiating surfaces ; 2d. The mode of regulating the 

 pressure of the steam and the combustion of fuel ; 3d. The absence of all 

 necessity for attendance upon it ; 4th. The freedom from risk of fire or 

 explosion. 



We do not deem it necessary to give a description of the apparatus, as 

 it has been described on a former occasion before this association. 



BENJAMIN GARVEY, 

 THOMAS B. HOWE, 

 JOHN JOHNSON, 



Committee. 



The association then adjourned, having continued the same subject for 

 next night. 



Polytechnic Association op the American Institute, ) 



April ith, 1860. } 



Professor Mason, the Chairman, having called for communications, or 

 exhibitions of inventions, 



Mr. St. John Odoris exhibited some specimens of "Artificial Fuel," 

 composed of seventy-five per cent, of coal dust, fifteen per cent, vegetable 

 matter, and ten per cent, bituminous matter. 



Mr. Pierson Crosby exhibited a neat model of a saw mill, with a hori- 

 zontal pitman, for re-sawing lumber. The model was a neat working one, 

 showing this to be a valuable invention. 



Dr. Stevens stated that the first saw mill ever made, was in Connecticut. 



Mr. Johnson stated that his own father was the first person who ever 

 sawed laths with a circular saw. 



Professor Mason considered the saw mill and the rolling mill as the two 

 most important inventions of modern times, giving, as they do, wood and 

 metals in suitable forms to be readily worked for the use of the farmer and 

 mechanic- 

 Mr. Fisher communicated the substance of the report about to be made 

 on the Patent Laws by the committee appointed to examine the subject. 



Mr. Lamed made some explanation with regard to the so-called Pressor 

 boiler, for which he holds a patent. He considered it improper to have 

 any personal matters brought before the Club. If any one doubted the 

 validity of his patent, or the originality of his invention, a court of law is 

 the only place to decide the question. The Club has no jurisdiction. 



