01156cam a22002291 4500 ca 05000828 DLC 20260227111041.0 760114s1841 paua 000 0 eng ca 05000828 (OCoLC)1925717 DLC GU OCoLC DLC premarc T7 .J73 Henry, Joseph, 1797-1878. Contributions to electricty and magnetism ... No. IV <Extracted from the tanscactions of the American Philosophical Society, vol. 8th> Philadelphia, Printed by W.S. Young, 1841. 35 p. illus. 29 x 23 cm. With : Description and analysis of a variety of hatchetine, found in Urpeth colliery, near Newcastle / Jas. F. W. Johnston. Newcastle : Printed by T. and J. Hodgson, 1837?] Bound together subsequent to publication. DLC On the induction produced at the moment of the beginning of a galvanic current.--On apparently two kinds of electro-dynamic induction.--Theoretical considerations relating to the phenomena described in this and the preceding communications. Induction (Electricity) 13320 13320