8g6 



NA TURE 



[December 30, 1922 



cent, of rubber, together with resin. — E. H. Booth : 

 Notes on the photographic work of the Sydney 

 University Eclipse Expedition, Goondiwindi, Queens- 

 land. The principle adopted was to give full ex- 

 posures to ensure recording all required material 

 on the plate, to develop to the point of general 

 chemical fog, and to take from each plate a series 

 of prints of different exposures, thus enabling a 

 1 omplete analysis of every degree of density in each 

 plate to be made. This has the same value as a 

 large number of individual exposures. The process 

 appears to have been quite successful, giving a full 

 range of prints showing detail from the extreme 

 photographic limit of the outer corona into the 

 prominences. An outline of exposures and sub- 

 sequent photographic treatment is given. Photo- 

 graphs showing inner corona and prominences were 

 displayed. — A. R. Penfold : The essential oils of two 

 Mvrtaceous shrubs, Homoranthus virgatus and H. 

 flavescens. The shrubs are common to various parts 

 of Northern New South Wales and Queensland. 

 H. virgatus contains as principal constituent up to 

 80 per cent, dextro alpha pinene, sesquiterpene, 

 amyl alcohol, and esters, and a paraffin of M.P. 

 65-66 C. H. flavescens contains 80 per cent, of the 

 olefenic terpene " Ocimene," together with dextro 

 alpha pinene, sesquiterpene, amyl alcohol, etc. 

 This hydrocarbon is recorded for the first time in 

 an Australian essential oil. — F. R. Morrison : The 

 essential oil of Kimzea corifolia. This dark green 

 bushy Shrub, which is one of the commonest grow- 

 ing in the Port Jackson district, yields a light 

 brown mobile oil of fragrant odour. The oil con- 

 sists principally of dextro alpha pinene, a sesqui- 

 terpene closely resembling cadinene, an unidentified 

 alcohol (the odoriferous constituent), and small 

 quantities of acetic and butyric acid esters. — W. M. 

 Doherty : A note on the food value of the snapper 

 (Pagrosomus auratus). The percentage of fat in the 

 snapper is very small, but it gave indication of the 

 presence of the fat-soluble, growth-promoting factor, 

 vitamin A. 



Official Publications Received. 



ided 



Pape 



krln.rt of the Depart: 

 March 31. L922. (Sessi 

 (Ottawa.) 



Mini-terio da \L:rii nltiira, Inilustria e Commerdo : Directoria <le 

 Meteorologia. Boletim Meteorologico : Anno de 1916. Pp. vi + 136. 

 (Kin de Janeiro.) 



Tin- Indian Forest Records. Vol. 9, Part 4: Tin- i ' I itm-nt- 



<.t .-..mil- Indian lv.sriiti.-il oils. Parts 1-7. By J. L. Simonsen and 

 Madyar Godal Ran. Pp. 36. (Calcutta: Government Printing 

 Office.) 6 annas. 



Forest Bulletin, No. 49: Note on Thingan («../..,/ ..,/. r«M. RoxlO. 

 By A. Rodger. Pp. 15. 7 annas. Forest Bulletin, No. 50: Note 

 ..n Gurjun or Kanyin. Compiled by W. Robertson. Pp.7. 4 annas. 

 (Calcutta : Government Printing Office.) 



Union of South Africa. Fisheries and Marine Biological Survey. 

 Report No. 2 for the Year 1921, bv Dr. J. D. F. Gilchrist; with 

 Introduction by II. Warington Smyth; and Special Reports 1: 



II. i.i..- ate i Flat Fishes), by ('. Von Bonde ; 2: Physical and 



eh. mi.: servations, by Dr C. Juritz ; 3: Deep-sea Fishes (Part 1), 



by Hi- .1 H I- nil. Ini-t, I'p n si - 7;i ]J. plate.- M a]..- rown.) 



Transactions ol the Lek-e-tcr Literary and Phil. .-.. phi. al s...irt\. 

 together with the Report of the Council for 1921-22, and Annual 

 Reports ..I the Sections. Vol. 23, 1922. Pp. 74. (Leicester.) 



Tin- Annual lii-pi.rt 1,1 the ilresham's School Natural History 

 Society, 1922. Pp.12. (Unit. Norfolk.) 



Department of Agriculture and Natural Resources: Weather 

 Bureau. Annual Report of the Weather Bureau. Part 1 : Work 

 of the Weather Bureau during the Calendar Year 1919; Part 2: 

 Hourly Meteorological l Ibsen at ions made at the Central Observatory 

 of Manila during the Calendar Year 1919. Pp. 143. (Manila: 

 Bureau of Printing.) 



Diary of Societies. 



SATURDAY, December 30. 



KovAt. Institution of Cheat Britain, at 3. — Prof. H. 11. Turner : 

 six steps up the Ladder to the Stars (2). The Discovery of the 



I'lan.-t Neptune (Juvenile Lectures). 



MONDAY, January 1. 

 British Psychological Society (Education Section) (at University 



College), at 2.30. — Hr. C. W. Kiininin- : The Child and the Cinema. 

 Royal Geograhii, m, Soi IETY (at .F.olian Hall), at 3.30— Lt.-Comni. 



A. s. Elwell-suttoi, : Up the Tigris d hristmas Lecture to Young 



People). 

 Child - Study Society (at Royal sanitary Institute), at 5. — Miss 



M. Drnmmond : Children's Drawings. 

 Mathematical. ASSOCIATION (at London Day Training College), at 



5.30. — Dr. S. Brodetsky : Gliding. 

 National League fob Health, Maternity, and Child Welfare 



(at University College), at 5.30. — Health Problems of Adolescence. 



TUESDAY, January 2. 



MATHEMATICAL Association (at London Day Training College), at 

 10.— 1'rol. F. II. Neville: \ statement rcsni-.-ting the forthcoming 

 Report of the Sub-Committee on the teaching of Geometry. — 

 At 11— W. C. Fletcher: The Uses of Non-Euclidean Geometry to 

 Teachers \t 12 1'n.t R W. Genese : simple Geometrical and 

 Kinematics! Illustrations oi the Plane Complex.— J. Brill: A 

 certain Dissection Problem. \t 2.30. sir Thomas L. Heath: 

 Greek Geometry, with special reference to Infinitesimals (President's 

 Iddress).— Prof. A. Lodge : Differentials as the basis for teaching 

 the Calculus. 



Royal Institution of Cheat Britain, at 3. — Prof. H. H. Turner: 

 six Steps up the Ladder to the Stars (3). Photographing the Stars 

 (Juvenile Lectures). 



National League for Health. Maternity, and Child Welfare 

 (at University College), at 5.30.— Dr. J. Kerr: Physique and 

 Growth 



Royal Photographic Society of Great Britain (Scientific and 

 Technical Group), at 7. — H. Lainplough : The Lamplough Flash 

 Lamp.— A. c. I'.aiili.-M : A Demonstration of the German Aeroplane 

 Camera now in the Society'- Mu-eum. 



Uontof.n So.'ii n i. it In-titiition ..I Ftertriral Engineers), at 8.15.— 

 Dr. A. E. Barclay: Tie- Organisation and Equipment of a Modern 

 X-Ray Department with Bpeclal reference to the New Department 

 at the Manchester Royal Infirmary.— Major C. E. S. Phillips: An 

 Electroscope of New Design. 



WEDNESDAY, January 3. 



i;..\ vi. Society OF Arts, at 3. — C. R. Darling: The Spectrum, its 

 Colours. Lines, and Invisible Parts, and some of its Industrial 

 Applications (Dr. Mann Juvenile Lecture). 



Physical Society of London and Optical society (at Imperial 

 College of Science and Technology), at 3-6, and 7-10.— Annual 

 Fxhil.ition of s.irntiti. \ppaiatu-. -At 4. — W. Gamble: Repro- 

 duction of Colour l>> II graphic Processes.— At 8— Prof. E. G. 



Coker : Recent Photo- Fla-ii. Re-earehcs on Engineering Problems. 



Royal Microscopical society (Biological section), at 7.30. 



THURSDAY, JANUARY 4. 

 Geogb m'iiu u. Association (at Birkl k Co 



Itussi 

 Activities of a 



.1 Fairgricvo : 



At 5.— H. Batsft 

 Royal Instititu 



Six Steps up til 

 its Revelation- I 



Physical Soon.n 



.1.1. 



), at 12. — Sir John 

 i in the Agricultural 

 Initial Ail.lre-s).— At 2.30 — 

 Visit to the United States. — 

 ■rials of Houses in England. 

 I, at 3. — Prof. H. H. Turner : 

 rs (4). The Spectroscope and 



Colleg. 



Exhibi 



In CI: \ 



Universi 



t.. Flo- 1 



Royal Ae 



H. Junk 



National 



Cnivrrsi 

 Psyrliotherai 



London ash Optical society (at Imperial 

 and Technology), at 3-6, and 7-10. — Annual 

 ntitie Apparatus— At 4.— Prof. E. G. Coker: 

 lc Researches on Engineering Problems. — At 8. 



iroiluetion of Colour bv Photographic Processes. 

 sh Association for Physical Training (at 

 at 5. — p ro f. M. E. Delafleld : Hygiene as applied 



'.Society (at Royal Society of Arts), at 5.30. — 



a Health, Maternity, and Child Welfare (at 

 at .'..:«). — Dr. W. Brown : Child Psychology and 



Institution of Electrical Engineers, at 6. — F. Creedy : Variable- 

 speed A.C. .Motors without Commutators. 



Camera Club, at 8.15.— W. L. F. Wastell : The Evolution of the 

 Lantern slide. 



FRIDAY, January 5. 



Geographical Association (at Birkbeck College), at 10.— Dr. 

 Olive Wheeler- The Place of Geociaphv m the Education of the 

 \.|,,|, ,. rut \t 11 45 --Mai -Gen. Lord Edward (ileichen : Per- 

 nio,, lit l omiiiittee on (i raphieal Names.— At. 12.15.— Prof. 



w' S Toner- (I Taplivnnil Bil-lne- Life.— At 2.30.— E. E. Luptoh 



■mil other- Ui-eu— ion on wav- of increasing the Usefulness of 

 'l-.ian.he- ot tie- \-o. -lation.— ' At 5.— Prof. P. M. Roxby : The 



Comin 



Royal ( 



Priest! 



People) 



lit LL society (at .Eolian Hall), at 3.30.— R. E. 

 tan-tic Adventures (Christmas Lecture to Y'oung 



National' League for Health, Maternity, and Child Welfare 



(at University College), at 5.30.— Prof. H. R. Kenwood : Health 



Education. „, „ ,. „t 



Junior Institution of Engineers, at 7.30i — W. Dinwoodie : Wave 



Power Transmission. 



SATURDAY, January 6. 

 Association 01 Women science Teachers (at University College), 



it 2 30 In Dorothy Wrinch : Relativity. 

 ROYAL Lnstitotiob 0I GREAT Britain, at 3. — Prof. H. H. Turner: 



-i\ Steps ■ 1 1 > the Ladder to the Stars (5). Two Great Streams of 



Star- l.liiM-nilr Feet, ires). 

 Gilbert White Fellowship (at c Queen Square, W.C.I), at i. — 



G. J. B. Fox : A Visit to Pompeii. 



NO. 2774, VOL. I IO] 



