522 TRANSACTIONS OF THE AMERICAN INSTITUTE. 



if you plant them with this crockery the water cannot get 

 through. 



Mr. Garvey said, if the pitch was not thick enough it would 

 peel off from the wood. He did not think the gentleman intended 

 to say that the wood would last without painting. 



Mr. Johnson. — The greatest difficulty consists in the checking 

 of the wood. 



Chairman (to Mr. Holland). — Have you put one of those out 

 for a winter, and exposed it to the weather ? 



Mr. Holland. — Yes sir, I have. 



Mr. Dibben. — What kind of wood did you use ? 



Mr. Holland. — Poplar. 



Mr. Garvey suggested to Mr. Holland that he should leave a 

 couple of pieces of his pottery for the members to experiment 

 upon. 



Mr. Holland said he would furnish them. 



Mr. Dibben. — What kind of wood is generally used in tele- 

 graph poles ? 



Mr. Holland. — About our place they use poplar. In Delaware 

 they use chestnut, and on the Camden & Amboy railroad they 

 use pine. 



The Chairman said his experience was that no one gained gold 

 by finding it. He was sure that there was more science in the 

 world now than in Job's time. He stated that he held in his 

 hand a piece of gold that was gathered in North Carolina ; also, 

 that an amount of gold equal to 94 cents was gathered from the 

 tailings of a bushel of gold, by a particular machine, which 

 would be soon presented. By the labor of two men with one of 

 these machines a gain of about $25 per day would be effected. 

 It is done by the aid of mercury. 



Mr. Babcock. — How much of that $25 a day is to be deducted 

 for mercury ? 



The Chairman said that this amount of gain was obtained over 

 all expense. 



A member stated that a friend of his had a machine by which 

 a greater saving could be effected without the use of any mercury. 



Mr. Johnson referred to the WykofiF machine. 



A visitor inquired if the gold was subject to disintegration by 

 the operation of a mechanical application ? 



Mr. Dibben said that that was so. He thought that a careful 

 man would take care of his tailings. 



