October 21, 1920] 



NATURE 



267 



evolved to oxygen absorbed varies between 07 and 10, 

 according to the species. These results are for 

 detached roots; the modifications caused by contact 

 with a very moist atmosphere and by leaving the plant 

 attached to ihe roots under experiment are also described. 

 — K. RousieaMX and M. Sirot : The nitrogenous materials 

 and phosphoric acid during the ripening and germina- 

 tion of wheat.— .\. J. Lrbain and P. Marty: The 

 influence of the subterranean work of the mole on 

 the flora of the pasturages of Cantal. The effect of 

 the work of the mole is to drain the soil, to favour the 

 germination and growth of the seeds, and to intro- 

 duce new plants, often useful.— P. Wlntrebert : The 

 relations between the aneural ectodermic irritability 

 and the nervous and muscular working in the 

 embryos of .Amphibians. — .\. Krempf : The tentacular 

 apparatus of Coeloplana go>\oiteita. 



SVDNEV. 



Llnnean Society of New South M'alei, .August 25. Mr. 

 J. J. Fletcher, president, in the chair. — T. G. Sloane : 

 A list of the species of .\ustralian Carabidae which 

 range beyond Australia and its dependent islands. 

 Forty-four Australian species are recorded from 

 localities outside .Australia and its dependent islands as 

 follows : — .Africa i, Amboyna i, .Aru Islands i, Asia 6, 

 south-«'ast Asia 4, Borneo i, Burma i, Celebes 3, 

 Ceylon 5, Egypt i, India 2, Java 8, Lord Howe 

 Island 2, Malay Archipelago 6, New Caledonia 12, 

 New Guinea 10, New Zealand 3, Siam i, Sumatra i, 

 and Sumbawa 3.— T. Steel : Dental encrustations and 

 the so-called "gold-plating" of sheep's teeth. For 

 man\ years past there have appeared from time to 

 time in new.spapers and magazines published all over 

 the world statements as to the occurrence of a metallic 

 encrustation on the teeth of sheep. Popularly this 

 encru^tation, being frequently of a yellow tint, has 

 been attrl1)uted to gold, supposed to have been derived 

 from particles of that metal scattered about the pas- 

 tures. Complete analyses are given of the encrusta- 

 tion from sheep, ox. man, and a number of other 

 animals, and it is shown to consist of a phosphatic 

 >-alivary deposit or calculus, and to be common to 

 Ihe teeth of all mammals and of several other animals. 



Marjorie I. Collins : The structure of the rcsin- 

 -ecreling glands in some Australian plants. .An 

 iccount of certain types of glandular hair and of the 

 'levelopment of the glan<l> observed during an inves- 

 tigation of the resinous secretion of the bud in seven 

 .\ustrnlian genera of the natural orders .Sapindaceae, 

 Leguminosea; (sub-order .\Iimoseae), Compositae, 

 Goodeniace.f, and Myoporinea'.- Prof. W. N. Bemon, 

 W. S. 0«n, and \\. R. Browne : The geologv and 

 petrology of the Great Serpentine Belt of New South 

 Wales. Part ix. The geologv, palaeontology, and 

 petrography of the Currabubula <llstrict, with notes 

 on adja<ent regions, (t) More than ninety sf)ecies 

 are recognised, comprising corals, brvozoa, brachio. 

 pods, pelecvpods. gastropods, scaphopods, cephalopods. 

 .-ind trilobites, of which five forms previously reported 

 linvp now b«-en for the first time critically examined, 



■yen are new records for the State, and fifteen species 

 ind three varieties are described as new. One new genus 



f corals is also proposed— a simple turbinate form 

 \ ith a corallum of the I.ilho«trntion type. (2) .A com- 

 parison of the Rurindi fauna with the Lower Car- 

 boniferous faunnl succession in the British Isles shows 

 that, on the evidenr" iif thirf\-onc British species of 

 brachiopods in the Biiriiidi series, it nhoukl be placed 

 Jif ihi' very base of th- \'is<*,Tn series or on the 

 Tournaisian-V'i«./an boiindnrv. This accords remark- 

 .nbly well with Pe Ki>nii'(l<\ ronrlit>ilon<; nut forward 

 fortv years agf). I 



yn. 2660, voT . 166] 



Books Received. 



An Introduction to the Study of Terra Sigillata : 

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Feeblemindedness in Children of School-Age. By 

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A Book about Plants and Trees. By R. and S. G. 

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Studies in Contemporary Metaphysics. By R. F. -A. 

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Type Ammonites. By S. S. Buckman. Part xxiii. 



Pp. 19-24+13 plates. '(London : VV. Wesley and Son.) 



Easy Lessons in Einstein. By Dr. E. E. Slosson. 



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Psycho-analysis : Its History, Theory, and Practice. 

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A Naturalist on Lake Victoria. With an Account of 

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Memoirs of the Geological Survey. Special Reports 

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 Sir A. Strahan and others. Pp. iv+123. (London: 

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Smithsonian Institution. United States National 

 .Museum. Bulletin 1 10. Osteology of the Carni- 

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 Gilmore. Pp. xi+ 150+36 plates. (Washington: 

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The Practice of Railway Surveying and Permanent 

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 net. 



Reinforced Concrete Design. By Dr. O. Fabcr. 

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Fisheries — England and Wales. Ministry of .Agri- 

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 .Series iii.. Hydrography. Vol. i., The English 

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Department of Scientific and Industrial Research. 

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Milk Testing.' By C. W. Walker-Tisdale. Second 

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Mobv-Dick or the Whale. By H. Melville. (The 

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Opera Hactenus Inedita Ro^ori Bnronl. Fasr. v. 

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 Roliert .Steele. .Accedunt Versio .Anglirana ex .Arabiro 

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