150 PEOCEEDINGS OF THE SOCIETY. 



The President then read Lis Annual Address, the first portion of 

 which reviewed the work done during the past year in connection with 

 the Society and Microscopy generally, the latter part being in continua- 

 tion of the optical subjects dealt with in his previous Addresses, and 

 specially having reference to the aplanatic oil-immersion front, and the 

 construction of the Huyghenian eye-piece. The Address was listened to 

 with great attention, and warmly applauded at its conclusion. 



Mr. A. D. Michael said that as this was the last occasion on which 

 they would have the pleasure of hearing a Presidential Address from 

 Mr. Nelson, he would ask the Fellows present to pass a very hearty vote 

 of thanks to him, not only for the Address they had just heard, and which 

 he hoped the President would allow them to print, but also for his 

 eminent services to the Society during the whole time that he had 

 occupied the chair. Since he assumed the office of President, Mr. 

 Nelson had given them from time to time a series of Addresses which 

 would form an admirable record of the practical application of the prin- 

 ciples upon which the optical part of the Microscope was constructed, a 

 subject upon which there Avas little reliable literature ; he had now com- 

 pleted the series by a final communication not less valuable than its pre- 

 decessors. His papers would form a means of reference of permanent 

 and substantial value as demonstrating what had previously been so 

 little on record, namely, the theory of the construction of objectives and 

 eye-pieces explained from a practical standpoint. He ventured to think 

 that the Fellows of the Society would wish to extend this vote of thanks 

 to cover the whole period during which Mr. Nelson had been in office, 

 and to express their sense of gratitude for his conduct as their President. 

 They would miss him greatly, and parted from him with extreme regret, 

 notwithstanding the fact that he was to have so excellent a successor. 

 He had much pleasure, therefore, in moving " That the best thanks of 

 the Society be given to Mr. Nelson for his Address, and also for his con- 

 duct in the chair during the time he had occupied it as President of the 

 Society." 



Dr. Braithwaite, in seconding this vote of thanks, expressed his sense 

 of the admirable way in which the President had carried out the duties 

 of his office ; it would doubtless be a great satisfaction to the Fellows 

 to know that he was leaving the Society in a much sounder condition 

 than he found it when he first occupied the presidential chair. 



The President being unable himself to put the motion from the 

 chair, it was put to the meeting by Mr. Michael and carried by 

 acclamation. 



Mr. Nelson said he was greatly obliged to Mr. Michael and to 

 Dr. Braithwaite for the kind way in which they had referred to his 

 services, and to the Fellows for the hearty manner in which they had 

 carried this vote of thanks. He felt that what he had been able to 

 do for the Society was very little, but if he had been of any service 

 to them the knowledge that his efforts had been appreciated was his 

 reward. 



The Scrutineers having handed in the result of the ballot, the 

 President declared the following Fellows to be elected as Officers and 

 Council of the Society for the ensuing year. 



