GENERAL SCIENCE. 



487 



Harris, (Sir) William Snow, (cont). On the nature of Thunderstorms, 

 and on the means of protecting Buildings and Shipping against 

 the destructive effects of Lightning. 8°. London, 1843. 



"Remarkable instances of the protection of certain Ships of Her 



Majesty's Navy from the destructive effects of Lightning. 



8°. London, 1847. 



Rudimentary treatise on Galvanism, and the general principles 



of Animal and Voltaic Electricity, with brief notices of the pur- 

 poses to which it has been applied. 12°. London, 1856. 



• A treatise on Fractional Electricity in Theory and Practice; 



edited with a memoir of the author by Charles Tomlinson, F.R.S. 



8°. London, 1867. 



Harrison, Edivard. Idea longitudinis : being a brief definition of the 

 best known axioms for finding the Longitude. 8°. London, 1696. 

 Experiments of wind ': hypotheses of the earth's motion, trade- 

 winds : a perpetual motion intimated, magnetic variations, and a 

 water-screw. 4°. London, 1700. 

 In History of the Works of the Learned. 

 Harrison, Edward. Dissert. Med. Inaug. de Opio. 



8°. Edinburgi, 1784. 



Harrison, George L. Chapters on Social Science as connected with 

 the Administration of State Charities. 8°. Philadelphia, 1877. 



Harrison, James. An introduction to a treatise on the proportions of 

 the constituent parts of Bells, and on the relative proportions of 

 Bells of different degrees of acuteness and gravity to each other. . . 



8°. Hull, 1831. 



Harrison, John. A description concerning such Mechanism as will 

 afford a nice and true Mensuration of Time ; together with some 

 account of the attempts for the discovery of the Longitude by the 

 Moon ; as also an account of the discovery of the scale of Music. 



8°. London, 1775. 



I ' 



and Harrison, William. The Principles of Mr. H.'s Time- 

 keeper ; with plates to the same [and a preface by Maskelyne]. 



4°. London, 1767. 



Principes de la Montre de Mr. Harrison ; [Fr. & 



Eng.] ; [to which is added in French only] Resultat des observa- 

 tions de Mr. Maskelyne sur la montre de Mr. Harrison. 



4°. Avignon, 1767. 



Harrison, William H. Psychic Facts. A selection from the writings 

 of various authors on Psychical Phenomena. Edited by W. H, 

 Harrison. 8°. London, 1880. 



The founding of the British Association for the Advancement 



of Science. 12°. London, 1881. 



Harsdorffer, Georg Philip. Delicias Mathematics et Physicte. Der 

 Mathematischen und Philosophischen Erquickstunden zweyter 

 (und dritter) Theil. 2 vols. 4°. Nurnberg, 1677-92. 



See also Schwenter. 



