elected secretary, the proposer and seconder eulogising his long 

 and valuable services. In returning thanks, Mr. Ullyett alluded to 

 one or two incidents connected with the society. The first was 

 that it was nineteen years ago that it was origiuated, and he 

 remarked that when it was proposed to establish the museum, 

 twelve members of the Town Council voted upon it, six for and six 

 against, and it was only carried by the casting vote of the Mayor, 

 the late Mr. John Gambrill. The establishment of the museum 

 was not the only good object which had been directly accomplished 

 liy the Society, but to its exertions was due the existence of the 

 public library and reading room, the science and art classes, and 

 the new building on the Grace Hill. 



Februaky 15th, 1887. 



The usual meeting was held in the Council Chamber. An 

 experimental lecture on the Dynamo was given by Mr. A. H. 

 Ullyett, illustrated by the Lantern, and an abundance of experi- 

 ments. 



The attendance was large, and the lecture was warmly 

 appreciated. 



THE DYNAMO. 



The Dynamo is quite a modern discovery. At the beginning of 

 the present century it never occurred to the scientific me a then 

 living — amongst whom was Sir H. Davy — that mechanical motion 

 could be so used as to produce currents of Electricity. But now, 

 since Faraday's great discovery to which I shall presently refer, 

 a tremenduous leap has been made in this branch of the science of 

 Electricity. 



According to Professor Thompson, a Dynamo is a machine for 

 converting the energy of mechanical motion, into the energy of 

 electric currents or vice versa ; that is if by the means of a. 

 machine, or by muscular power motion is produced, and this 

 motion sets up electric currents, the machine generating these 

 currents is a Dynamo. Or if, by means of electric currents motion 

 is produced in some part of a machine, that machine is a 

 Dynamo. 



In this box is a battery capable of giving a strong electric 

 current ; if the positive and negative poles be connected with the 



