12 



RECAPITULATION. 



1 Brush machine, 4 lights, 6.448 horse power; 1.112 h.p. per light 

 1 Wal.-Farm. " 3 '' 10.6976 " 3.568*' 



1 " " 5 " 16.3705 " 3.274 '' 



The series of diagrams I retain as my vouchers. If the com- 

 mittee require them, they are at their order. 

 Eespectfully submitted. 



F. W. BACON, Consulting Engineer. 

 8 Pemberton Square, Boston. 



Manufacturers and others desiring to use Electric Light, are 

 requested to send to us full particulars regarding the buildings, 

 rooms or places to be lighted, including dimensions, character 

 of walls and ceilings, amount of available power, amount of 

 light now used or needed, character of work being done,^ etc. 

 With these items before us, we will make a proposition to fur- 

 nish a complete outfit for electric light, put it in perfect working 

 order, and guarantee its success and permanence. Attention is 

 called to the following letters from well-known establishments 

 using our apparatus, as the best possible evidence of its entirely 

 practical success. We have already sold 500 lights for actual 

 use. 



Franklin Institute. 



At the conclusion of a long and exhaustive trial at the Frank- 

 lin Institute, in Philadelphia, a complete report on Dynamo- 

 Electric Machines was presented by a special committee of nine 

 members, strongly favoring the Brush Machine, and its pur- 

 chase was recommended for the uses of the Institute, which 

 recommendation was immediately carried out. The only Amer- 

 ican machine — the Wallace — competing with the Brush, was 

 shown to be less than one-third the efficiency of the Brush, and 

 heated so greatly as to be seriously impeded in working. 



