Although Telford was not connected with the Institution of Civil Engineers at its formation, he accepted their invitation in 1820, and became their President; and from that time he was unremitting in his attention to the duties of the office, having become by his partial retirement from business, a pretty regular resident in the metropolis. Telford was possessed of a robust frame, and till he had reached the age of seventy, had never been visited with any serious illness. While at Cambridge, in the year 1827, he was afflicted with a severe and dangerous disorder; and although he gradually recovered a certain degree of health, he never regained his former vigour. He died a few years afterwards at his house in Abingdon Street, Westminster, having completed the seventy-seventh year of his age. His remains were deposited in Westminster Abbey, where there is a statue erected to his memory.--_Encyclopædia Britannica._--_English Cyclopædia._ CHARLES TENNANT. Born May 3, 1768. Died October 1, 1838. Charles Tennant, the founder of the celebrated chemical works at St. Rollox, Glasgow, was born at Ochiltree, Ayrshire. His father, John Tennant, was factor or steward to the Countess of Glencairn, and also rented a farm on her estate, in the culture of which he displayed great practical and scientific ability. John Tennant married twice; after the death of his first wife, by whom he had two sons and one daughter, he married, in the year 1757, Margaret McLure, who, in the course of time, brought him a numerous family of six sons and seven daughters. John Tennant's second wife possessed very superior abilities, which she earnestly directed to the education and advancement of her family, ultimately having the satisfaction of seeing all her children turn out men of energy and success in life. Charles Tennant, the subject of our memoir, was the fifth son; he received his early education at home, afterwards attending the parish school of Ochiltree. When still very young, Charles left home and went to Kilbarhan, with the intention of learning the manufacture of silk. After remaining at this place a short time, Tennant removed to Wellmeadow bleachfield, where he studied the methods of bleaching at that time in use, and ultimately went to Darnly (the place from which the unfortunate husband of Mary, Queen of Scots, took his title), and established there an extensive bleachfield, taking into partnership with him Mr. Cochrane of Paisley. Mr. Tennant now devoted himself to the study of chemistry, feeling that the process of bleaching could only be effected by true chemical agency, whatever might be the particular method or operation, and that, therefore, the bleacher must in the first case look to the chemist for the discovery of more potent agents to effect his object. Before Mr. Tennant's time the operation of bleaching was of a very tedious and expensive nature. The cloth was steeped in alkaline lye, which was called 'bucking.' The