xHv Annual Report of the Council. 



The number of volumes bound during the year has been 

 226, in 189 covers. The amount of binding for the previous 

 session was 214 volumes bound in 167. 



The additions to the library for the session amounted to 

 856 volumes, 706 serials, and 150 separate works. The dona- 

 tions (exclusive of the usual exchanges) were 148 volumes 

 and 158 dissertations; 2 volumes were purchased, in addition 

 to those regularly subscribed to. 



New exchanges have been arranged with the Remeis- 

 Sternwarte ( Veroffentlichungen), Bamberg ; Rijks Herbarium 

 {Mededeeli?ige?i), Leiden ; Teyler's Godgeleerd Genootschap 

 {Verhandelingen), Haarlem; the Society of Chemical Industry 

 {/ournal of), London ; The Micrologist, Manchester ; and the 

 University Observatory {Co?itributions), Princeton, New Jersey, 

 U.S.A. 



In August the new '■Catalogue of Serials in the Library,^ 

 the progress of which was referred to in the la^t Report of the 

 Council, was issued, and provides a well-arranged and indexed 

 list of the Society's large collection of serial publications. 



Lack of the space necessary for the proper provision of the 

 large quantity of literature which is continually being added to 

 the Society's library greatly hampers the accessibility and 

 satisfactory exhibition of the books. 



Mr. Francis Nicholson, F.Z.S., has presented to the 

 Society a letter written by John Dalton, to Elihu Robinson, 

 of Eaglesfield, near Cockermouth, soon after he had become 

 a resident in Manchester, where, in 1793, he had been 

 appointed Tutor in Mathematics and Natural Philosophy at the 

 " Manchester Academy," now " Manchester College," Oxford. 

 The letter contains probably the earliest account of that 

 peculiarity of vision known as colour-blindness. Mr. Thomas 

 Thorp, F.R.A.S., has also added to the donations during the 

 session by presenting to the Society a crossed transparent grating 

 constructed by himself 



