Dr. William Cullen, the celebrated physician and medical writer, and Dr. William Hunter, the brother of the great anatomist, when young men formed a copartnery of as singular and noble a nature as any to be found in the records of their profession. They were both natives of the neighbourhood of Glasgow, and Hunter studied for the church at that university. But he accidentally became acquainted with Cullen, who was some years his senior, and had settled in a medical practice at Hamilton; and this friendship, strengthening his natural inclination, drew Hunter away from the study of theology to that of medicine. He went to reside with Cullen, and entered into partnership with him--neither of the young men being well to do, and both stimulated by the impulse of genius to take this step in order that they might the better overcome the obstacles presented by the narrowness of their fortunes to the prosecution of their studies. It was stipulated that each partner alternately should be allowed to study during the winter at what college he pleased, the other meantime conducting the joint business for the common advantage. Cullen, as the senior partner, had the first winter, and he went to Edinburgh. But next winter Hunter's turn came: he preferred London to Edinburgh, went thither, and did not return to Scotland. His excellence as a dissector, singular dexterity in making anatomical preparations, assiduity in study, and agreeable manners, won him the warm regard of Dr. Douglas, to whom he had an introduction from Foulis the printer; and in two or three years Hunter became a lecturer on anatomy, and laid the foundations of a great fame and fortune. The scientific partnership was of course dissolved by Hunter's success in London; but Cullen freely consented to renounce his claim on his junior, and ever afterwards maintained a very cordial and friendly correspondence with Hunter--though the two friends are believed never afterwards to have seen each other. THE EXHAUSTIVE BARROW.