CHAPTER IV.

Davy makes a tour with Mr. Purkis through Wales.--Beautiful phenomenon observed from the summit of Arran Benllyn.--Letter to Mr. Gilbert.--Journal of the Institution.--Davy's papers on Eudiometry, and other subjects.--His first communication to the Royal Society, on a new galvanic pile.--He is proposed as a Fellow, and elected into the Society.--His paper on astringent vegetable substances, and on their operation in tanning leather.--His letter to Mr. Poole.--He is appointed Chemical Lecturer to the Board of Agriculture.--He forms friendships with the Duke of Bedford, Mr. Coke, and many other celebrated agriculturists.--Attends the sheep-shearing at Holkham and Woburn.--Composes a Prologue to "The Honey-Moon" 150