CUMBERLAND COUNTY SOCIETY. • IQQ 



having some improvements ■which the Committee noticed as good, two 

 cultivators — both with improved form of teeth for strength, one hav- 

 ing a short steel point bolted into each tooth by which the durability 

 of the implement must be greatly increased ; and a lot of forks from 

 the firm of Stevens, Peck & Co. 



A. P. Robinson, Portland, presented a model of a Truss bridge 

 for common roads, to be made of three-inch plank, without the use 

 of iron, for 100 feet to 130 feet span. The Committee were unani- 

 mous in warm commendation of this bridge, — considering the great 

 advantage of doing away with the long iron bolts used in other forms of 

 truss, with their constant expansion and contraction from heat and 

 cold, and the consequent difficulty of keeping them adjusted to the 

 braces and cords so that they shall neither cramp the wood nor 

 yield in sudden extreme changes common to the climate of Maine. 

 They would however like to suggest to Mr. R., or rather quere, 

 whether joint bolts at the head of the braces, would not be better, on 

 the whole, than treenails and keys. McCallums improved patent 

 inflexible arched truss bridge, was also exhibited by Mr. Robinson. 



Mr. Charles Hunnewell, Windham, a sample of Rail fence, with 

 one or two improvements. 



B. D. Morrill, Windham, a very excellent Washing tub, simple 

 and cheap in its design and construction, the Committee recommend 

 it as a practically useful machine. 



