.^6o 



NA TURE 



[Februaky 7, 1895 



pentacetyl compounds derive! frjm glucose under the natnei 

 a, B, and f ponta;ctines. — On hctane'hylcno r\mine, by M. 

 Dclcpino. The molecular weight, rfetermined by the cryoscopic 

 melhod, requires the formula CsH,jNj. This result is fully 

 con6rme<l by examination of its reactions and by the chnracter 

 of its niiroso-dcrivatives. — Oo the seeds of Ci^w/a from French 

 Congo, by MM. H. Lrcomte and A. HcSeri. The oil obtained 

 from these seeds appears to consist wholly of triolein. —New 

 facts relating to the mechanism of hyperglycaemia and hypo- 

 glycemia ; influence of the nervous system on glucose formation 

 and histolysis, by M. M. Kaufmann. The conclusions arc drawn 

 that : (1) in hyperjjlyaeiiiia, and hence in diabetes, glucose for- 

 mation and histolyiic resorption are active; (2) in hypo- 

 glycemia, (jiucose formation and histolysis are diminished ; 

 (3) section of the medulla near the brachial enlargement 

 modilies the action of the liver ; this organ then supplies the 

 blood with less sugar and more glycogen ; nutrition is 

 also generally modified, the storage power of the tissues is 

 augmented and their hislolytic resorption dimini-hed. — On 

 some points in connection with spermatogenesis in \.\\k Sitacicns, 

 by M. Armand Sahalier.— On the fixation of .■hJf'haUs by the 

 byssus, by M. Louis l!r>utan. — On the attachment of Amoebx 

 to solid bodies, by .M. Felix Le Dantec. — Histological observa- 

 tions on the functional adaptations of the epidermic cell in 

 insects, by M. Joannes Chatin.— On a new practical process 

 for the estimation of calcium carbonate in arable soils, by M. 

 .\ntoine de Siporla. The estimation is based on the alteration 

 in density of a moderately dilute solution of hydrochloric acid 

 when chlorides are formed from soil con-tiiuents and dissolved. 

 — On some Micrococci from Ihe StJ/ihanicii, upper coal- 

 measures, by M. B. Renault. — On mildew : its treatment by a 

 new proce-s, " lysolage," by M. Louis Sipiere. — The mulberry 

 disease, by M. A. Prunel. The disease described appears to 

 be due to a fungus allied to ClaJochytrium vilicolum. This 

 fungus is named by the author ClaJochytrium, M iri. — Re- 

 searches on the conditions which have determined the princioal 

 characters of the lunar surface, by M. Stanislas Meunier. — On 

 '.he rjle of our sensations in the perception o( mechanical 

 phenomena, by M. V. Clementitch de Engclmeyer. 



DIARY OF SOCIETIES. 



London. 



THURSDAY. February ;. 



Royal Socihtv, al 4.J0. — On the Applivation o) the Kinetic 'Ihenry to 

 Dcil<e Gues : S. H. Kurbu'y, V. R b.— On the Abclian System ot DilTcr- 

 cntial Eiiuationi, and thrir R-itional and Integral \ gct>raic Integrals, witli 

 a DitcusM .n ol ihc Pciodicily of Abcli^n Functions ■ Rev. W. R. 

 We»tr .pf-KobcrU. — The Os -ilUtioiu of a Rotating Ellipsoidal Shell con- 

 uining Fluid : S. S. Housh 



LlNHK^N ■vK.tSTV, at 8 —I he Comparative Morpholosy of the Galeodidx: 

 H. .M. Bernard. -New Marine Alga from Japan : E. M. Holmes. 



.SociKTV *.■? Ka I ivUAktk.s, at 8.30. 



Chemical Socitiv. at 8 —The f.lcctromolivc Force of an Iodine Cell : 

 A. P. Laurie.— The Acti m of He^l on E. hylic fJ-amidocrotunalc: Dr. 

 Collie.— The Acidimctryof Hydroltnoric Acid : Prof Ha^a. 



LoMCMN Institution, at 6.— The Germination of liarley : A. Gordon 

 S«lamon. 



FRIDAY, Fkhkuarv 8. 



ROVAL Imstitutiin, at.).— Tnc Anti-toxic Serum Treatment of Diph- 

 theria : lir. G. Sim> Wood head. 



Pmvsicai SotiiiT«,at s.— Anual General Meeting..— An Exhibition of 

 Si-nple App.,r*tu»: W. B. Croft.— On the Tin Cnromic Chloride Cell : 

 S Skinner. 



RoTAt. A-.TwnioMirAL SoctRTV, at3. — Annivenary Meeting. 



•*■■: Ehginbers. at S.— The Construction and Main- 



• " ii. H. Godfrey. 



Ma. . V, at 8. 



Clinic m. -'>■ ".if rv, -.i ^. 



SATURDAY, FicnKUARV 9. 



RoTAL Botanic Socmrv. at V4S 



-S USD A y, Fkhruarv 10. 



SvMOAT LicrURK Socmrv, at 4 — .)ecp Sea Exploratiooi in their Geo- 

 logical Bearingi : Dr. K. I> Roberts. 



MO.WDAV. hHinjUARV II. 



London Institution, ai 5 -Iruib ar.d Kalsthood as to Electric Cur- 

 rent in ihe Body : Prjf Victor llorsley, K.k.S. 



RoVAL Gi.iCRAriitCAL Socibtv. at 3 30. — North. Went Brili.h Guiana : 

 G. O. DuoD.— A Joumepr in Germaa Ne« Guinea: Captain Cayley 



So' I — Meant for Verifying Ancient Embroider'es and 



Ca-' —A Simplified and Improved Form of Photo- 



E I .lylor. 



R I Anciiitects, at 8. 



Ua 



/LIES DAY. FEimuAnv 11. 

 RoTAL 1»«titution. ■! }.— The InUrnal Framework of Plant» and 



An .i.al> : Pf .f C. Stewart. 

 I"s' 'VIL «!.< iiKiMs, al 8.— Pip;r to he further ditcuxed : 



I .•: and Elccincal KeguUtion of Sicam-Eoginei : John 



N\J. 13 19, VOL. 51] 



ANrHRnrOLOciCAL INSTITUTE, at S.30.— The Ethnographic Survey of the 

 United Kingdom : E. W. Brabr>>ok. Prehistoric Kemains in Cornwall, 

 Part I. : A. L- L'wis —On the Northern Settlements of the West 

 Saxons: Dr John Bcddoc. F.R.S. 



RovAL Photographic Society, at S — Annual General Meeting. 



RovAL Victoria Hall, at S.— A Visit to Russia: Smith Woodward. 



RovAL Horticultural SociKTV, at ^.—Annual Genetal Meeiint;. 



Federated Institution of Mining Engineers.— Meeting at Birming- 

 ham. 



RovAL Asiatic Socirrv, at 3. 



RovAL Mbdical and Chirl'rgical Society, at S.30. 



Ko\al Colonial Imstititte. at S. 



li^ED.VESDAy, February I?. 



SociRTV OF Arts, at 8— Light Railways : W. M. Acworth. 



Sanitary Institute, at 8. — Do* Methods of Sanitation: Dr. George 

 Vivian Poorc. 



Pharmale'Jtical Society, at S.30. 



THURSDAy, Fei.ruarv m. 



Rjtal Sociktv, at 4 yy. 



KoVAL Institution, at 3.— Meteorites : L. Fletcher, F.R.S. 



Institution op Electrical ENGiNEKRS.at 8.— OnRevcr-iible Regenera- 

 tive Armatures, and Short Air Space Dynamos: W. B. Saycrs. 



Society of Antiquaries, at 8.30 



MATK3MATICAL SOCIETY, at 8.— Notet On the (Theory of Groups of 

 Finite Order, III. and IV. : Prof. W. Burnside, F.R.S. 

 FRIDAY^ February 15. 



RovAL Institution, ai 9.— Mountaineering: Clinton T. Dent. 



Geological Society, at 3.— Annual General Meeting. 



Quekktt MiCKOsroi'iCAL Club, at S. — Annual General Meeting. 



Epidbmiolocical Society, ac 8.— Dr. Atkinson, of Hong Kong. 



BOOKS. PAMPHLET, and SERIALS RECEIVED. 



Books. — Good Ri-ading about many Books (Unwin) — I,a Pr.ititiue du 

 Tcintwcier: J. Gaiv;on, ionic i and jiParis, Gaulhie^-ViIlar^). — SIusacI 

 Culture and the Ban Supply : W. L. Caldcrwood (MacmiUan). — Lchrbuch 

 dcr Algebra: Prof. H. Weher, Erster Band (Brannschweip, Vicwijj). — 

 Sea and Land: Prof- N. S. Shaler (Smith, Elder), — Steam and the Marine 

 Steam Engine: J. Veo (Macmillan).— N. S. W. Report of the Minister of 

 Public Instruction for the Year 1832 (Sydney). — Proceedings of the Inter- 

 national Conference rn Aerial Navigation held in Chicago. August i to ^, 

 tS93 (New York, Amcrhitn fCng^inccr^ &c.) — Progressof Science: J. 1. 

 Marmcry (Chapman and Hall). 



Pa.mpiilf.t.- Eludes Climaio'ociques : A. Lancaster (Bruxelles). 



Serials.— Century Magazine, February (Unwin).— C> niemporary Re- 

 view, February (Nbistfr) — A«clejiiad, No. 42, Vol. xl. (Longmans).— 

 Bulletin de I'Aradiimie Royale acs Sciences de Belgiitue, No 12. tome 38 

 (Bruxellcs). — Reliquary, &c., January (Brmro^c).— Natiunal Review, 

 February (Arnold) — Zeit-^chrift fiir Physikalische Cheniie, xvi. Band, 1 

 Heft (Leipzig, Engelmann).—Geograf.hical Journal, February (Stanford). 



CONTENTS. PAGE 



Argoti 337 



A Text. book of Botany. Tiy H. H. D 339 



A New Popular Boolt on British Butterflies and 



Moihs. Hv W. F. Kirby 339 



I Our Book Shelf:— 



! U.iumhancr : " Die Resultate der Aetimethode in der 



\ krystallographisclien Forschung, aneiner Reihe von 



kryslallisirten Korpcrn dargcslellt. (Ilhistialed) . 340 

 Fowler: " Summer Studies o( Hirds and Hoiks " . . 341 

 Withcrby : " Forest Birds : their Haunts and Habits " 341 

 Letters to the Editor: — 



On Ihe Age of the Karth.— Prof. John Perry, 



I F.R.S. 341 



I Oceanic Temperalurci al Different Depths. (With 



' Z>/fl!;>-fl«;.)— Captain W.J. L.Whaiton, F.R.S. 342 



j The liird-Winged Butterflies of the East.— Robert 



H. F. Rippon 343 



Thirst I'^ndurance in some Vertebrates. — Prof. S. 



Carman 343 



Kliclroscopcs in Lecture.- J. Reginald Ashworth 343 

 Snake Cannibalism. — Baron C. K. Obten Sacken 343 



Pierre Ducbartre. By H • 344 



Notes 344 



Our Astronomical Column : — 



New Stars and Nebul.x 347 



The Dcsigna'ion of Comrts 347 



The New Constituent of the Atmosphere. liy Lord 

 Rayleigh, Sec. R.S., and Prof. William Ramsay, 



F.K.S 347 



On the Spectra of Argon. By William Crookes, 



F.R.S 3S4 



The Liquefaction and Solidification of Argon. By 



Prof. K Olszewski ZSS 



University and Educational Intelligence 356 



Scientific Serials 356 



Societies and Academies 357 



Diary of Societies 360 



Uooki, Pampnlet, and Serials Received 360 



