president's address. 17 



This article was written by J. Hornblower, assisted by Davies 

 Q-iddy, as is recorded in a letter of Oct. 22nd, 1792. 



In a letter of Davies Giddy's, dated May 27th, 1792, is 

 drawn a diagram of the force of steam as exerted at different 

 parts of the stroke of the piston, which is almost the same as 

 that now used. I have a diagram of the 90-in. engine working 

 at Wheal Grenville, drawn in May, 1894, for comparison. 



The letters of Richard Trevithick to Mr. Davies Gilbert, 

 commencing about 1804, are also of interest, and I can only regret 

 that the answers to them were not preserved, as, judging from 

 those to Hornblower, they would have shown the same kindly 

 readiness to help in making calculations for the practical 

 experimenter. 



Most of Mr. E. Trevithick's letters have been published by 

 T. Trevithick, C.E., his son, in the life of his father, but I have 

 many that have not been published. 



THE OLD GAJilE OF HURLING 



formerly so common in many parts of the county, but now chiefly 

 confined to the district round St. Columb, has left some interest- 

 ing remains in the silver balls used in these matches. Whenever 

 I have had an opportunity to examine them, I have found them 

 made of wood covered with two plates of silver fastened to the 

 wood with nails, having heads formed, in one case, like roses, 

 and generally of about the same size. 



One I have lately seen differs from all others in being 

 pierced through by a hole about an inch across. The silver 

 plate on one side covering the hole remains, and is engraved 

 with a circle marking the hole, and a pattern showing an open 

 flower in the centre pierced with small holes ; on the other side 

 the silver has been broken away, but the pattern was different 

 as shown by small remains of foliage engraved round it. One 

 side has " God save the King;" the other half has inscribed 

 round it, " Play fare, bee merry and wise, that of your sport no 

 harm arise." 



From MSS. of Dr. Borlase on the Cornish Language, &c., 

 I extract the following — 



