“My brothers were often introduced as solo performers and assistants in the orchestra of the court, and I remember that I was frequently prevented from going to sleep by the lively criticism on music on coming from a concert, or conversations on philosophical subjects which lasted frequently till morning, in which my father was a lively partaker and assistant of my brother William by contriving self-made instruments.... Often I would keep myself awake that I might listen to their animating remarks, for it made _me so happy_ to see _them so happy_. But generally their conversation would branch out on philosophical subjects, when my brother William and my father often argued with such warmth, that my mother’s interference became necessary, when the names Leibnitz, Newton, and Euler sounded rather too loud for the repose of her little ones, who ought to be in school by seven in the morning. But it seems that on the brothers retiring to their own room, where they shared the same bed, my brother William had still a great deal to say; and frequently it happened that when he stopped for an assent or reply, he found his hearer was gone to sleep, and I suppose it was not till then that he bethought himself to do the same. “The recollection of these happy scenes confirms me in the belief, that had my brother William not then been interrupted in his philosophical pursuits, we should have had much earlier proofs of his inventive genius. My father was a great admirer of astronomy, and had some knowledge of that science; for I remember his taking me, on a clear frosty night, into the street, to make me acquainted with several of the most beautiful constellations, after we had been gazing at a comet which was then visible. And I well remember with what delight he used to assist my brother William in his various contrivances in the pursuit of his philosophical studies, among which was a neatly turned 4-inch globe, upon which the equator and ecliptic were engraved by my brother.” [Sidenote: 1755-1756. _Early Recollections._] Towards the end of the year 1755 the regiment was under orders for England, and the little household was at once broken up. A place in the court orchestra had been promised to Jacob, but the vacancy did not, unfortunately, occur in time, and he was obliged to smother his discontent, lower his ambition, and accept a place in the band with his younger brother. At length the sad hour of parting arrived:—