No record of this eminent philosopher has yet appeared, except his scientific papers, and a few meagre biographical sketches published shortly after his death. It is to be hoped that some one duly qualified for the task will become the historian of his life and labours before it is too late. William Hyde Wollaston was born August 6, 1766. His grandfather was well known as the author of a work, entitled ‘The Religion of Nature Delineated.’ He completed his education at Caius College, Cambridge. It has been said, in most of the memoirs of him, that he obtained the honour of being senior wrangler. This is a mistake, arising from Francis Wollaston, of Sidney, having gained the first place in 1783. It appears from the Cantabrigienses Graduati that he did not graduate in Arts; but, with a view to practising medicine, proceeded to the degrees of M.B. in 1787, and M.D. in 1793. He was not unversed, however, in mathematical studies. He first established himself as a physician at Bury St. Edmunds, in Suffolk; but meeting with little encouragement, removed to London. Soon after this change of abode, he became a candidate for the office of physician to St. George’s Hospital, in opposition to Dr. Pemberton. The latter was elected, and Wollaston, in a fit of pique, declared that he would abandon the profession, and never more write a prescription, were it for his own father. He kept to his resolution, hasty and unwise as it may seem; and from this time forward devoted himself solely to the cultivation of science. Even in an economical view he had no cause to regret this, for he acquired wealth by the exercise of his inventive genius. One single discovery, that of a method by which platinum can be made ductile and malleable, is said to have produced him about thirty thousand pounds. It has been objected that he derogated from the dignity of the philosophic character by too keen an eye towards making his experiments profitable: but in this field, if in any, the labourer is surely worthy of his reward; and unless it can be shown that he turned away from any train of discovery, because it did not promise pecuniary gain, surely not a shadow of blame can be attached to him for profiting by the legitimate earnings of his industry and talents. That he was fond of acquiring money, there is good reason to believe; but there is a story, which has been before told, and which we have ourselves some reason to consider authentic, which proves that he could use nobly that which he had gained frugally. A gentleman, in embarrassed circumstances, requested his interference to procure some place under government. He replied, “I have lived to sixty without asking a single favour from men in office, and it is not, after that age, that I shall be induced to do it, were it even to serve a brother. If the enclosed can be of any use to you, in your present difficulties, pray accept it; for it is much at your service.” The enclosure was a cheque for ten thousand pounds.