212 
NATURE 
[JANUARY 28, 1904 
pared with other leaves. The effects of the growth of this 
tree in marshy soil are more probably due to its power of 
rapidly producing a large mass of foliage than to any 
specially large transpiratory effects.—The utilisation of 
entomophytic fungi for the destruction of larve: C. Vaney 
and A. Conte.—On the excrescences of the leaves of the 
vine: P. Viala and P. Pacottet. These abnormalities are 
not observed in vineyards, but are produced by forced culture 
under glass.—On a trachyte in the French Soudan: 
H. Arsandaux. The case described is the first example 
of volcanic rock in the western French Soudan. Two types 
of alkaline trachyte and one basalt were found.—The in- 
crease of useful work in traction by the use of elastic 
apparatus: MM. Ferrus and Machart.—Remarks by M. 
Marey on the preceding paper.—The relation between the 
appearance of secondary sexual characters and the inter- 
stitial testicular gland: P. Amcel and P. Bouin.—The 
action of various substances on the glycogeny of the liver : 
MM. Doyon and Kareff.—The determination of the value 
of intraorganic combustion in the parotid gland of the ox 
in a state of activity and repose: G. Moussu and J. Tissot. 
—On the stimulation of nerves by discharges of condensers : 
M. Cluzet.—On certain congenital anomalies of the head, 
determining a symmetrical transformation of the four ex- 
tremities (acrometagenesis): V. Babes.—On the destruc- 
tion of the winter egg of Phylloxera: G. Cantin. 
DIARY OF SOCIETIES. 
THURSDAY, January 28. 
Roya Society, at 4.30.—Observations on the Sex of Mice—Preliminary 
Paper: Dr. S. M. Copeman, F.R.S., and F. G. Parsons.—Obser- 
vations upon the Acquirement of Secondary Sexual Characters indicating 
the Formation of an Internal Secretion by the Testicle: S. G. Shattock 
and C. G. Seligmann.—On the Part played by Benzene in Poisoning by | 
Coal Gas: Dr. R. Staehelin.—On the Islets of Langerhaus in the 
Pancreas: H. H. Dale.—The Morphology of the Retrocalcarine Region 
of the Cortex Cerebri: Prof. G. Elliot Smith. 
Roya InsTITUTION, at 5.—The Flora cf the Ocean: G. R. M. Murray, 
F_R.S. Fr 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—The Edison Accumu- 
lator for Automobiles: W. Hibbert. (Adjourned discussion.) To be 
opened by Dr. J. A. Fleming, F.R.S.—On the Magnetic Dispersion in 
Induction Motors, and its Influence on the Design of these Machines: 
Dr. H. Behn-Eschenburg. (Adjourned discussion.) 
FRIDAY, January 209. 
Roya. INSTITUTION, at 9.—The Marshes of the Nile Delta: 
Hogarth, 
InsTITUTION OF CiviL ENGINEERS, at 8.—Metallurgy as Applied in 
Engineering : Archibald B. Head 
InsTITUTION oF MecHaNIcAL ENGINEERS, at 8.—Extra Meeting. Sixth 
Report to the Alloys Research Committee on the Heat Treatment of 
Steel: the late Sir William C. Roberts-Austen, K.C.B., F.R.S.. Com- 
pleted by Prof. W. Gowland. (Continued discussion.) 
SATURDAY, January 30. 
Roya. InstiTuTioNn, at 3.—British Folk Song: J. A. Fuller-Maitland. 
Essex FIELD CLUuB, at 6.30 (Essex Museum of Natural History, Stratford).— 
Evidences of Prehistoric Man in West Kent: J. Russell Larkby.—Recent 
Observations concerning London City Walls, the Walbrooke and Moor- 
fields: F. W. Reader. 
MONDAY, Fesruary 1. 
Society or CuemicaL INpusTRY, at 8.—A Résumé of the Report, 
Minutes of Evidence, and Appendices of the Royal Commission on 
Arsenical Poisoning: Julian L. Baker. 
Society oF Arts, at 8.—Oils and Fats—their Uses and Applications : Dr. 
J. Lewkowitsch (Cantor Lectures II.). 
ARISTOTELIAN SOCIETY, at 8.—Reality: Shadworth H. Hodgson. 
TUESDAY, FEesruary 2 
Rovav InsTiruTIoNn, at 5.—The Development of Animals: Prof. L. C. 
Miall, F.R.S. 
INSTITUTION OF CrtviL ENGINEERS, at 8.—The Sanding-up of Tidal 
Harbours: A. E. Carey. (Discussion).—Tonnage Laws and the Assess- 
ment of Harbour Dues and Charges: H. H. West. 
MINERALOGICaL Society, at 8.—On a New Sulphostannite of Lead from 
Bolivia, and its Relations with Franckeite and Cylindrite: G. T. Prior.— 
On the Gnomonic Net: Harold Hilton. 
ZooLocicat Sociery, at 8.30,—On the Subspecies of Giraffa camelopar- 
dalis: R. Lydekker, F.R.S.—On a Collection of Mammals from Nama- 
qualand: Oldfield Thomas, F.R.S.—On the Arteries of the Base of the 
Brain in Certain Mammals: F. E. Beddard, F.R.S. 
FarapDay Sociery, at 8.—Notes on Aluminium Welding: Sherard 
Cowper-Coles.—Some Applications of the Theory of Electrolysis to the 
Separation of Metals from One Another: A, Hollard. 
WEDNESDAY, Fesruary 3: 
at 8.—Steam Cars for Public Service: 
D. G. 
Society oF ARTS, Thomas 
Clarkson. 
GEocoaicat Society, at 8.—The Rheetic Beds of the South Wales Direct 
Line: Prof. S. H. Reynolds and A. Vaughan. -Ona Deep-Sea Deposit 
from an Artesian Boring at Kilacheri, near Madras: Prof. H. Narayana 
Rau. 
NO. 1787, VOL. 69 | 
ENTOMOLOGICAL Society, at 8.—On the Habits of some Mantide: 
Captain C. E. Williams.—Systematic Observations upon the Derma- 
toptera: Malcolm Burr.—Descriptions of New Species of Cryptine, 
from the Khasia Hills, Assam; and a New Species of Bembex: Peter 
Cameron.—On a New Species of Heterogynis: Dr. T. A. Chapman.— 
On some New or Imperfectly Known Forms of South African Butterflies : 
Roland Trimen, F.K.S. 
Society oF Pusiic ANALysTS, at 8.—Annual Meeting, followed by Note 
on the Quantitative Estimation of Mechanical Wood Pulp in Paper: 
C. F. Cross and E. J. Bevan.—Note on Chinese Tallow Seed Oil: 
L. Myddelton Nash.—Note on the Analysis of Jam: Raymond Ross. 
THURSDAY, Fesrvuary 4. 
Roya Society, at 4.30.—Probable Papers: The Reduction Division in 
Ferns: R. Gregory.—Cultural Experiments with ‘‘ Biologic Forms” of 
the Krysiphacee : E. S. Salmon.—On the Origin of Parasitism in Fungi: 
George Massee.—On Mechanical and Electrical Response in Plants: 
Prof. J. C. Bose.—On the Effects of Joining the Cervical Sympathetic 
Nerve with the Chorda Tympani: Prof. J. N. Langley, F.R.S., and Dr. 
H. K. Anderson. 
Roya. InsvriTuTION, at 5.—Recent Research in Agriculture: A. D. Hall. 
Cuemical. Society, at 8—The Tautomeric Character of the Acidic 
Thiocyanates—Preliminary Note: R. E. Doran.—The Resolution of 
aB-Dihydroxybutyric Acid into its Optically Active Constituents: R. S. 
| Morrell and E. K, Hanson. 
| Linnean Society, at 8.—Account of Researches in the Physiology of 
Yeast: brof. Sydney H. Vines. F.R.S.—Further Researches on the 
Specialisation of Parasitism in the Erysiphacee: E. S. Salmon. 
RONTGEN Society, at 8.30 —Discussion on the Production of Photo- 
graphic Reversal through the Action of Various Radiations. 
SATURDAY, Fesruary 6. 
Rovar InstiruTion, at 3.—Study of Style in Greek Sculpture: Dr. C. 
Waldstein. 
CONTENTS. PAGE 
Prof. Armstrong’s Educational Campaign. By 
Prof Arthur Smithells; F-R5S) 2. °).)) cag semeao. 
PracticaleZoology:. By Ji; Aveieeiys.s ae 290 
IrrigationpvViorks:.".. | 2/i2- meu ante) Pema 291 
| Our Book Shelf :— 
Sondericker: ‘‘ Graphic Statics, with Applications to 
russes; beams, and! Arches) 95 -u uate 
Maxwell: ‘* Memories of the Months.”—R. L. . 292 
| Horth: ‘‘ Educational Woodwork” . . «: op e202. 
Kiibler : “‘ Die Proportion des goldnen Schnitts ” 292 
Letters to the Editor ;— 
The Royal Society.—J. Y. Buchanan, F.R.S. e293 
| The Radiation from an Electron describing a Circular 
| Orbit.—Oliver Heaviside, F.R.S . A SS. 293 
Atmospheric Electricity. —Sir Oliver Lodge, F.R.S. 294 
Nomenclature and Tables of Kinship.—Francis 
Galton, F.R.S. . aes Pi VE! Bec ey 
The Source of the Energy of Radium Compounds.— 
William Ackroyd). §... 2 292 3a : 295 
y-Rays from Radium.—J. R. Ashworth Boo 2h 
Phosphorescence of Photographic Plates.—James 
FfRoncai; 0. E> Bloch.) (iemame)- =e e200) 
M. Blondlot's x-Ray Experiments.—S. G. 
Browngeys |.) pete) «et een Sante eeeeOO 
Curious Shadow Effect. (Z//ustrated.)—H. M. 
Warner. rey en dy CU AE PESTS 
Destructive Action of Rain upon Animal Life. —W. 
Ruskin Butterfield ; : T 4. o yo ego 
Subjective Images.—Prof. Herbert McLeod, 
F.R.S. ; Alex. Thurburn; T. A. Vaughton 207 
Abysmal Deposit.—H. Robson... ..... 207 
Spelling Reform.—T. B. S. ; The Reviewer . 207 
Researches Relating to Radium. By Frederick 
Soddy, <) (fis (oy erememients) Ucive.6..:0 3) 00 ee OO] 
Observations of Glaciers and Avalanches , . 299 
John SamueliBudgettiesr. . - . - «sii en emeO CO 
IN(OtES ce ails) net toiteMelelieh 1 sy <1 -)c1ncieat SI 301 
Our Astronomical Column :— 
Astronomical Occurrences in February. . . . . 305 
Variability of the Minor Planet Iris... .. . 305 
Harvard Meridian Photometer Observations 305 
Light(@hangestofve Aurigze <<. eer <) sn i-tasiten aos 
Scientific Investigation and Progress. By Prof. 
Ira Remsen... ES ret besarte 6-0. Boe) 
Fireballs in January. By W. F. Denning: . 310 
University and Educational Intelligence .. . . . 310 
SocietiesiandyAcademies) 3 5) cue. cum -a nn a 
|pDianyzOfeSOCretes: © a i-ia.- i.) -me et een 312 
