463 



The author observes, that the structure of the blood-corpuscles 

 can be accurately learned only by a careful investigation of their 

 mode of origin, and by following them through all their changes in 

 the capillary vessels, and especially in the capillary plexuses and di- 

 latations, where all their stages of transition from the colourless to 

 the red corpuscles may be seen. The filament which forms here 

 and there in the corpuscles of coagulating blood he has shown to 

 other persons, with Microscopes made by Ross and Powell. Dr. 

 Barry denies that he meant certain general remarks in his paper, re- 

 ferring to more than twenty delineations of corpuscles from various 

 animals, to apply exclusively to those of man. 



3. A paper was also in part read, entitled, " Experiments on the 

 Gas Voltaic Battery, with a view of ascertaining the rationale of its 

 action, and on its application to Eudiometry." By William Robert 

 Grove, Esq., M.A., F.R.S., &c. 



The President informed the Meeting that the Council had voted 

 the following Address of Condolence to Her Majesty the Queen, on 

 the occasion of the demise of His Royal Highness the Duke of 

 Sussex : — 



" To the Queen's Most Excellent Majesty. 



" The humble Address of the President, Council, and Fellows 

 of the Royal Society of London for improving Natural 

 Knowledge. 



"Most Gracious Sovereign, 



" We, Your Majesty's most dutiful and loyal subjects, the Presi- 

 dent, Council, and Fellows of the Royal Society of London for im- 

 proving Natural Knowledge, beg leave to approach Your Majesty 

 with the expression of our heartfelt condolence on the loss which 

 Your Majesty has sustained by the lamented death of His Royal 

 Highness the Duke of Sussex. In the expression of our sorrow we 

 are sure that all Your Majesty's subjects must unite with us, when 

 they regard the public and private virtues of His Royal Highness. 

 We are bound to feel additional grief as a Society over which His 

 Royal Highness had presided, and where he had unifonnly shown 

 the greatest zeal for the ca,use of knowledge, and the most amiable 

 condescension and kindness to every cultivator of Physical Science." 



May 18, 1843. 



The MARQUIS OF NORTHAMPTON, President, in the Chair. 



James TuUoch, Esq., was balloted for, and duly elected into the 

 Society. 



1. The reading of a paper, entitled " Experiments on the Gas 



