NOTICE TO AUTHORS. 



Authors of Papers are urgently requested to send in all Drawings, 

 Diagrams, or other Illustrations, in a state suitable for direct photo- 

 graphic reproduction. They should be drawn on a large scale, in Indian 

 ink, on a smooth white surface, with lettering adapted to a reduction 

 in scale. Where illustrations are numerous, much time would be 

 saved if authors would indicate in advance those considered essential 

 to the understanding of their Papers. 

 (When the MS. is typewritten the copy should be carefully corrected by the 

 author before it is presented.) 



NOTICES TO FELLOWS OF THE ROYAL SOCIETY. 



The Library will be closed for cleaning from August 6 to August 20. 

 No books can be taken out of the Library during August. 



During August and September the Offices and Library of the Society 

 are closed at 4 o'clock, on Saturdays at I. 



The Council have directed that the Minutes of the Meetings of the Society shall 

 be sent out as an inset in the ' Proceedings,' separately paged, and shall afterwards be 

 republished in the ' Year- Book.' 



The ' Proceedings,' both the Physical and the Biological Series, are sent in the 

 ordinary course by post to every Fellow of the Society who resides within the limits 

 of the Postal Union, on application to Messrs. Harrison and Sons, 45, St. Martin's Lane ; 

 ithese will be bound in volumes, in cloth, for 2s. 6d., or the cases for binding may be 

 purchased, price Is. 6d. 



The ' Philosophical Transactions * are delivered, in volumes, in cloth covers, only to 

 those Fellows who call for them, or who send a written application to the Assistant 

 Secretary. Such an application may, if so desired, be filed as a standing order. 



The ' Philosophical Transactions ' are also delivered in the form of separate Papers, 

 post free, immediately on publication, to those Fellows who desire to have them in that 

 form. And, on application to Messrs. Harrison and Sons, 45, St. Martin's Lane, these 

 will be bound in a cloth case for 2s. 6d., or the cloth cases for binding may be 

 purchased, price Is. 6d. 



SUBSCRIPTION TO THE PUBLICATIONS OF THE ROYAL 



SOCIETY. 



Series A of the ' Proceedings ' may be subscribed for in advance, by the public, at 

 the reduced uniform price of 1 5s. per volume of about 600 pages. 



Series B of the ' Proceedings ' may be subscribed for at the reduced uniform price 

 of 20s. per volume. 



Each Series of the ' Proceedings ' may be obtained, for this subscription, either in 

 separate numbers, immediately on publication, or in volumes, bound in blue cloth if 

 desired. About two volumes of each Series appear per annum. Cases for binding can 

 be purchased as above. 



The separate Papers constituting the ' Philosophical Transactions ' are on sale at 

 varying prices. A list of recent Papers is given on p. 3 of this cover. 



