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 by the government with a completely-equipped laboratory, in which, for a period of six years, he carried on the inquiries necessary for the purposes of that body, and was thus the means of bringing to light an enormous amount of valuable information respecting the contamination of rivers by sewage, trade-refuse, &c., and the purification of water for domestic use. In 1865, when he succeeded A. W. von Hofmann at the School of Mines, he undertook the duty of making monthly reports to the registrar-general on the character of the water supplied to London, and these he continued down to the end of his life. At one time he was an unsparing critic of its quality, but in later years he became strongly convinced of its general excellence and wholesomeness. His analyses were both chemical and bacteriological, and his dissatisfaction with the processes in vogue for the former at the time of his appointment caused him to spend two years in devising new and more accurate methods. In 1859 he passed a night on the very top of Mont Blanc in company with John Tyndall. One of the purposes of the expedition was to discover whether the rate of combustion of a candle varies with the density of the atmosphere in which it is burnt, a question which was answered in the negative. Other observations made by Frankland at the time formed the starting-point of a series of experiments which yielded far-reaching results. He noticed that at the summit the candle gave a very poor light, and was thereby led to investigate the effect produced on luminous flames by varying the pressure of the atmosphere in which they are burning. He found that pressure increases luminosity, so that hydrogen, for example, the flame of which in normal circumstances gives no light, burns with a luminous flame under a pressure of ten or twenty atmospheres, and the inference he drew was that the presence of solid particles is not the only factor that determines the light-giving power of a flame. Further, he showed that the spectrum of a dense ignited gas resembles that of an incandescent liquid or solid, and he traced a gradual change in the spectrum of an incandescent gas under increasing pressure, the sharp lines observable when it is extremely attenuated broadening out to nebulous bands as the pressure rises, till they merge in the continuous spectrum as the gas approaches a density comparable with that of the liquid state. An application of these results to solar physics in conjunction with Sir Norman Lockyer led to the view that at least the external layers of the sun cannot consist of matter in the liquid or solid forms, but must be composed of gases or vapours. Frankland and Lockyer were also the discoverers of helium. In 1868 they noticed in the solar spectrum a bright yellow line which did not correspond to any substance then known, and which they therefore attributed to the then hypothetical element, helium.

Sir Edward Frankland, who was made a K.C.B. in 1897, died on the 9th of August 1899 while on a holiday at Golaa, Gudbrandsdalen, Norway.

FRANKLIN, BENJAMIN (1706–1790), American diplomat, statesman and scientist, was born on the 17th of January 1706 in a house in Milk Street, opposite the Old South church, Boston, Massachusetts. He was the tenth son of Josiah Franklin, and the eighth child and youngest son of ten children borne by Abiah Folger, his father’s second wife. The elder Franklin was born at Ecton in Northamptonshire, England, where the strongly Protestant Franklin family may be traced back for nearly four centuries. He had married young and had migrated from Banbury to Boston, Massachusetts, in 1685. Benjamin could not remember when he did not know how to read, and when eight years old he was sent to the Boston grammar school, being destined by his father for the church as a tithe of his sons. He spent a year there and a year in a school for writing and arithmetic, and then at the age of ten he was taken from school to assist his father in the business of a tallow-chandler and soapboiler. In his thirteenth year he was apprenticed to his half-brother James, who was establishing himself in the printing business, and who in 1721 started the New England Courant, one of the earliest newspapers in America.

Benjamin’s tastes had at first been for the sea rather than the pulpit; now they inclined rather to intellectual than to other pleasures. At an early age he had made himself familiar with The Pilgrim’s Progress, with Locke, On the Human Understanding, and with a volume of The Spectator. Thanks to his father’s excellent advice, he gave up writing doggerel verse (much of which had been printed by his brother and sold on the streets) and turned to prose composition. His success in reproducing articles he had read in The Spectator led him to write an article for his brother’s paper, which he slipped under the door of the printing shop with no name attached, and which was printed and attracted some attention. After repeated successes of the same sort Benjamin threw off his disguise and contributed regularly to the Courant. When, after various journalistic indiscretions, James Franklin in 1722 was forbidden to publish the Courant, it appeared with Benjamin’s name as that of the publisher and was received with much favour, chiefly because of the cleverness of his articles signed “Dr Janus,” which, like those previously signed “Mistress Silence Dogood,” gave promise of “Poor Richard.” But Benjamin’s management of the paper, and particularly his free-thinking, displeased the authorities; the relations of the two brothers gradually grew unfriendly, possibly, as Benjamin thought, because of his brother’s jealousy of his superior ability; and Benjamin determined to quit his brother’s employ and to leave New England. He made his way first to New York City, and then (October 1723) to Philadelphia, where he got employment with a printer named Samuel Keimer.

A rapid composer and a workman full of resource, Franklin was soon recognized as the master spirit of the shop. Sir William Keith (1680–1749), governor of the province, urged him to start in business for himself, and when Franklin had unsuccessfully appealed to his father for the means to do so, Keith promised to furnish him with what he needed for the equipment of a new printing office and sent him to England to buy the materials. Keith had repeatedly promised to send a letter of credit by the ship on which Franklin sailed, but when the Channel was reached and the ship’s mails were examined no such letter was found. Franklin reached London in December 1724, and found employment first at Palmer’s, a famous printing house in Bartholomew Close, and afterwards at Watts’s Printing House. At Palmer’s he had set up a second edition of Wollaston’s Religion of Nature Delineated. To refute this book and to prove that there could be no such thing as religion, he wrote and printed a small pamphlet, A Dissertation on Liberty and Necessity, Pleasure and Pain, which brought him some curious acquaintances, and of which he soon became thoroughly ashamed. After a year and a half in London, Franklin was persuaded by a friend named Denham, a Quaker merchant, to return with him to America and engage in mercantile business; he accordingly gave up printing, but a few days before sailing he received a tempting offer to remain and give lessons in swimming—his feats as a swimmer having given him considerable reputation—and he says that he might have consented “had the overtures been sooner made.” He reached Philadelphia in October 1726, but a few months later Denham died, and Franklin was induced by large wages to return to his old employer Keimer; with Keimer he quarrelled repeatedly, thinking himself ill used and kept only to train apprentices until they could in some degree take his place.