Royal Society. 405 



Fig. 3. Blood-discs and corpuscles with a capillary ; some of the latter near 

 the sides were inspected for a long time, and remained fixed in 

 the same situation, while a rapid current was traversing the vessel. 



Fig. 4. Corpusculation of a vessel towards the end of the tongue. This 

 vessel was traced for a considerable distance and contained no 

 blood-discs. 



jFVg'. 5. Extra fibrination of a vessel. The smaller globules are probably 

 globular particles of fibrine, the others are extravasated corpus- 

 cles. 



Fig. 6. Varicose swelling of a ruptured capillary giving passage to the 

 blood. In the same subject were perceived similar swellings, but 

 without a rupture, in which the blood circulated. 



PLATE II. 



Fig. 1. Represents vessels of the inferior surface of the tongue as they ap- 

 pear after the escape of the corpuscles, filled with stationary 

 blood, deformed and indented at the points of escape, near 

 which the corpuscles are generally found. A portion of a vessel 

 with an internal current is likewise seen with discs, and internal 

 and external corpuscles. No indentations are seen near these, 

 probably from the force of the current, which directly restored 

 the form of the vessel. The remainder of this figure was covered 

 with membranous muscular striae, which to avoid complication 

 are not represented. 



Fig. 2. Shows the process of absorption of stagnant blood. In this case 

 the vessels themselves still remain, while their contents are un- 

 equally absorbed. Tortuous vessels ramify among them. 



LIX. Proceedings of Learned Societies. 



ROYAL SOCIETY. 



[Continued from p. 133.] 



Juno 18, 'TpiHE Electric Fluid." Bv W. F. Stevenson, Esq., 

 1846. J. F.R.S. 



The author denies the existence of two electric fluids, and main- 

 tains that all the phenomena are explicable on the hypothesis of a 

 single fluid ; which when present in a conducting body renders it 

 positive, and in a non-conducting body, negative ; but a body which 

 is naturally a conductor, may, he asserts, be rendered otherwise, by 

 changing its form. 



" Observations of the Heights of the Thermometer and Barometer 

 made at Lenham Lodge, near Maidstone, Kent, during the first nine 

 days of the month of June 1846." By George Hunsley Fielding, 

 M.D., F.R.S. 



On Sunday the 7th of June 1846, the thermometer in the shade 

 rose to the extraordinary height of 94° Fahr., exceeding by one de- 

 gree the heat of the 13th of July 1808, which was considered to be 

 the highest on record in this country. 



" On the relative dynamic value of the Degrees of the Compass ; 

 and on the Cause of the Needle resting in the Magnetic Meridian." 

 By Sir Graves C. Haughton, K.H., M.A., F.R.S., Foreign Associate 

 of the Institute of France. 



