156 



NAIURE 



[April i, 1920 



Mineralogical Society, March i6.— Sir William P. 

 Beale, Bart., president, in the chair.— A. Russell: The 

 occurrence of cotunnite, anglesite, leadhillite, and 

 galena on fused lead from the wreck of the fireship 

 Firebrand, Falmouth Harbour, Cornwall. The speci- 

 mens were obtained in 1846 from the wreck of the 

 fireship Firebrand, which was burnt in Falmouth 

 Harbour about the year 1780. They were found under 

 the lead pump, most of which appeared to have been 

 melted and mixed with charcoal, and consist of slag- 

 like masses of lead, which has evidently been fused, 

 and upon the surface and interstices of which are 

 numerous well-defined and brilliant crystals of cotun- 

 nite and anglesite, and more rarely small crystals of 

 leadhillite and galena. The cotunnite crystals, which 

 are colourless and transparent, with brilliant faces, 

 ^re nearly always elongated in the direction of the 

 a axis, and attain a length of 3 mm. The habit is 

 somewhat variable owing to the verV unequal develop- 

 ment of the faces. The forms observed were 010, 

 001, 021, on, 012, loi, III, and 112. The anglesite 

 crystals are of rectangular habit, and exhibit the 

 forms 100, 001, no, 102, 122, and 113. The lead- 

 hillite crystals, thin six-sided plates in shape, are of a 

 Tjrown colour, and show the forms loi, 201, Toi, 201, 

 112, III, T12. and Yii. The galena occurs in minute 

 cubo-octahedra. An occurrence of cotunnite formed 

 under almost exactly similar conditions has been 

 described by A. Lacroix. Similar occurrences of lead 

 oxychlorides at Laurium and of leadhillite in Roman 

 slags from the Mendip Hills were referred to. — ■ 

 W. Campbell Smith : Riebeckite-rhyolite from North 

 Kordofan, Sudan. A rock found by Dr. C. G. Selig- 

 man at the base of Jebel Katul, 350 miles south-west 

 of the Bayuda volcanic field, was described. — Dr. G. T. 

 Prior : The meteoric iron of Mount Ayliff, Griqualand 

 East, South Africa. This meteoric iron, found about 

 IQ07, is a coarse octahedrite similar in character to 

 Wichita County (Brazos River) and Magura (Arva). 

 On polished and etched surfaces it shows nodules of 

 graphite and troilite, and abundant cohenite crystals 

 arranged parallel to the octahedral bands. It con- 

 tains about 7 per cent, of nickel. 



Books Received. 



British Antarctic Expedition, 1910-1913. Meteoro- 

 logy, vol. i., Discussion, by Dr. G. C. Simpson. 

 Pp. X + 326+V plates. Vol. ii., Weather Maps and 

 Pressure Curves, by Dr. G. C. Simpson. Pp. 138+ 

 23 plates. (Calcutta : Thacker, Spink, and Co.) 



The Theory of Determinants in the Historical 

 Order of Development. By Sir Thomas Muir. 

 Vol. iii. : The Period 1861 to 1880. Pp. xxvi + 503. 

 (London : Macmillan and Co., Ltd.) 355. net. 



Inbreeding and Outbreeding : Their Genetics and 

 Sociological Significance. By Drs. E. M. East and 

 D. F. Jones. Pp. 285. (Philadelphia and London : 

 J. B. Lippincott Co.) 105. 6d. net. 



The Physical Basis of Heredity. By Prof. T. H. 

 Morgan. Pp. 305. (Philadelphia and London : J. B. 

 Lippincott Co.) los. 6d. net. 



Psychology from the Standpoint of a Behaviorist. 

 By Prof. J. B. Watson. Pp. xiii + 429. (Philadelphia 

 and London : J. B. Lippincott Co.) 105. 6d. net. 



The Theory and Practice of Aeroplane Design. By 

 S. T. G. Andrews and S. F. Benson. Pp. xii + 454. 

 (London : Chapman and Hall, Ltd.) 15s. 6d. net. 



Science and Theology : Their Common Aims and 

 Methods. By F. W. Westaway. Pp. xiii + 346. 

 (London : Blackie and Son, Ltd.) 155. net. 



Monarch: The Big Bear of Tallac. By E. 

 Thompson Seton. Pp. 215. (London: Constable 

 and Co., Ltd.) 7.'^. 6d. net. 



NO. 2631, VOL. 105] 



I Animal Heroes. By E. Thompson Seton. Pp. 363. 

 (London: Constable and Co., Ltd.) 8s. 6d. net. 



Farm Management. By J. H. Arnold. Pp. vii-f- 

 243. (New York : The Macmillan Co. ; London : 

 Macmillan and Co., Ltd.) 75. 6d. net. 



Cement. By B. Blount. Assisted by W. H. Wood- 

 cock and H. J. Gillett. Pp. xii4-284. (London: 

 Longmans and Co.) 185. net. 



Diary of Societies. 



TUESDAY, April 6. 

 RoNTGKN Society (at Medical Society of London), at 8.15. 



WEDNESDAY, April 7. 

 Royal Unitkp Sf.rvick Institution, at 3. — Lieut. W. S. King-Hall : 



The Submarine and Future Naval Warfare. 

 Society ok Public Analysts and other Analytical Chemists (at 

 Chemical Society), at 8. 



THURSDAY, fi.pmi. i. 

 Optical Society, at 7.30. 



Institution of Automobile Engineers (Graduates Section), (at 28, 

 Victoria Street), at 8.— W. D. Pile : 'J he Use of Benzol. 

 FRIDAY, April 9. 

 Royal Astronomical Society, at 5. 



Concrete Institute, at 6. — T. J. Clark: The Uses of Concrete. 

 Malacological Society ok London (at Linnean Society), at 6. 

 Institution of Mechanical Engineers (Informal Meeting), at 7.— 

 C. H. Woodfield and Others : Discussion on Cranes : Their Use and Abuse. 



CONTENTS. PAGE 



The Anti-dumping Bill 125 



Science and Scholasticism. By Dr. Charles Singer 127 



Ancient Camps in Gloucestershire 128 



Principles of Glass-making 128 



Physical Chemistry 129 



Soils and Manures. By C. C 130 



Our Bookshelf 131 



Letters to the Editor: — 



Science and the New Army. — Prof. L. N. G. 

 Filon, F.R.S. ; Prof. R. Whiddington ; Lt.- 

 Col. E. Gold, F.R.S. ; Dr. Charles S. Myers, 



F.R.S 133 



Knowledge and Puwer. — L. Bairstow, F.R.S. . . 135 



Museums and the State.— "F.R.S." 136 



The Magnetic Storm of March 22-23 ^"d Associated 

 Phenomena. — Dr. C. Chree, F.R.S. ; Rev. 



A. L. Cortie, S.J. .136 



Some Methods of Approximate Integration and of 

 Computing Areas. — Prof. J. B. Dale; R. A. P. 



Rogers .138 



Gravitational Deflection of High-.speed Particles. — 



H. G. Forder 138 



Colouring Matters of Plants . . • .... 139 



Geodetic Survey in North America. By E. H. H. 141 



Science and Research in the Air Service .... 142 



Obituary : Mr. SedleyjTaylor. By Dr. CyrilRootham 143 



Notes 144 



Our Astronomical Column : — 



April Meteors 149 



Spectrum of r; Argus 149 



Infra-red Spectra of Nehulas 149 



Hydrographical Studies. By Prof. D'Arcy W. 



Thompson, C.B., F.R.S 150 



Public Health and Welfare 151 



Education of Engineers. By W. C U 152 



Tropical Control of Australian Rainfall. By W. W. B. 152 



Prehistoric Man and Racial Characters 153 



A College of Tropical Agriculture 153 



Duplex Wireless Telephony 154 



University and Educational Intelligence 154 



Societies and Academies 155 



Books Received 156 



Diary of Societies 156 



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 ST. MARTIN'S STREET, LONDON, W.C.2. 

 I Advertisements and business letters to be addressed to the 

 ^ Publishers. 



' Editorial Communications to the Editor. 



I Telegraphic Address: Phusis, London. 



I Telephone Number : Gerrard 8830. 



