Diatom Markings and Podura-scale Markings.-The Rev. J. B. Reade, by the use of a very admirable reflecting medium, viz. a prism-constructed by Mr. Highley, of London-has been able to demonstrate satisfactorily that the so-called hexagonal markings of diatoms are, as Mr. Wenham had previously urged from investigating splintered bits of diatom-valves, simply hemispherical close-set tubercles. Dr. Royston Pigott, of Halifax, had, curiously enough a little before Mr. Reade, come to the conclusion that the well-known markings of the Podura-scale are caused by a series of spherical "beads" placed in the substance of the scale, which so act on the light as to produce the effect known to all microscopists. Dr. Royston Pigott has examined the subject with exceeding care, having had a th especially constructed for his use, and availing himself of great mathematical knowledge in discussing the optical problems involved. Literature. The reader is reminded of the Record of Zoological Literature', part of which is now ready, and which to increase its usefulness is now brought out in three separate volumes, so that those interested in a special department may obtain a complete and reliable record of what has been written concerning it during 1868, without being encumbered by other matter.M. Pollen, with the aid of several illustrious Dutch professors of Natural History, is publishing at Leyden an elaborate work on The Fauna of Madagascar and the neighbouring Islands,' where he spent some years exploring and collecting.-A new work by Mr. Darwin, On Man,' is stated by The Academy' to be in preparation. Memorial to Dr. Sharpey.-A physiological laboratory and scholarship and a portrait and bust of Dr. Sharpey are now being subscribed for by old and present students of University College, London, and by others interested in physiological research, and who value the teaching and influence of Dr. Sharpey in this country; the object of the subscription being to do honour to Dr. Sharpey, and to form a species of testimonial or memorial to him. There is not in England a single laboratory of experimental physiology properly worked and used for the education of students. It is to be hoped that the proposed Sharpey laboratory may form an example to be followed elsewhere. A distinguished German physiologist lately observed upon the strangeness of the fact, that in England we produce absolutely no physiologists in the strict sense. This may be due to the want of laboratories, which are provided by the State in other countries. Quarterly List of Publications received for Review. 1. The Life and Letters of Faraday. By Dr. Bence Jones, Secretary of the Royal Institution. 2 vols. Illustrated. Longmans, Green, & Co. 2. Elements of Chemistry: Theoretical and Practical. By William Allen Miller, M.D., L.L.D., V.P.R.S. Fourth Edition, with Additions. Part III., Organic Chemistry. Longmans, Green, & Co. 3. Exercises in Practical Chemistry. By A. G. Vernon Harcourt, M.A., F.R.S., and H. G. Madan, M.A., F.C.S. Series I. Qualitative Exercises. Clarendon Press. 4. Essays on Physiological Subjects. By Gilbert W. Child, M.A., F.L.S., &c. Second Edition, with Additions. Longmans, Green, & Co. 5. Twelve Lectures on Primitive Civilizations and their Physical Conditions. By John P. Mahaffy, A.M. Longmans & Co. 6. The Science of Arithmetic: a Systematic Course of Numerical 7. The School Arithmetic. By James Cornewell, Ph.D., and J. Ġ. Fitch, M.A. Simpkin, Marshall, & Co. 8. Studies of the Land and Tenantry of Ireland. By B. Samuelson, M.P. Longmans, Green, & Co. 9. A Practical Treatise on Metallurgy, adapted 10. Chemistry for Schools. By C. Houghton Gill, Assistant-Examiner in Chemistry at the University of London. tions. 11. Burton-on-Trent. With 100 Illustra- Its History, its Waters, and its Breweries. Trübner & Co. By William Molyneux, F.G.S. 12. Index to the Fossil Remains of Aves, Ornithosauria, and Reptilia, from the Secondary System of Strata. Arranged in the Woodwardian Museum, Cambridge. By H. G. Seeley. VOL. VII. Cambridge: Deighton, Bell, & Co. L 13. The Rise and Progress of Manufactures and Commerce, and of Civil and Mechanical Engineering in Lancashire and Cheshire. By William Fairbairn, C.E., LL.D., F.R.S. (now Sir William Fairbairn, Bart.). PAMPHLETS AND PERIODICALS. Mineral Statistics of the United Kingdom for the Year 1868. By Introductory Lecture at the Royal College of Science, Ireland. By A Trip to America. By James Howard, M.P., Bedford. The Alexandra College, Dublin. Programme and Synopsis of Lectures to Ladies. (Three Pamphlets.) On the Continuity of the Gaseous and Liquid States of Matter. By Thomas Andrews, M.A., F.R.S. Bakerian Lecture. Methods of Teaching Arithmetic. By J. G. Fitch, M.A. Stanford. Introductory Address delivered at the Royal Infirmary School of Medicine, October 1st, 1869. By A. Davison, M.A., M.D. Liverpool: Adam Holden. The Working Man's School. By W. J. Kennedy, M.A. Longmans. The Popularity of Error and the Unpopularity of Truth. By John Hampden, Esq. A Brief Paper on the Pathology of Insanity. By R. C. Shettle, M.D., Physician to the Royal Berks Hospital. The Canadian Naturalist and Geologist. (With the Proceedings of the Natural History Society of Montreal.) The Liverpool Medical and Surgical Reports. Edited by P. M. Braidwood, M.D., and Reginald Harrison, F.R.C.S. The Geological Magazine. The British and Foreign Mechanic. The Quarterly Journal of Microscopical Science. J. Churchill & Sons. Revue Bibliographique Universelle. Cosmos. Journal of Applied Chemistry, published simultaneously in New York, Philadelphia, and Boston. The American Naturalist. Van Nostrand's Eclectic Engineering. The Gardener's Magazine. The Civil Service Gazette. The Westminster Review. PROCEEDINGS OF LEARNED SOCIETIES, &c. Öfversigt af Kongl: Vetenskaps-Akademiens Förhandlingar. |