2 
40 
NATURE 
[JANUARY 7, 1904 
appears to take place in the nervous system, especially in 
the nerve centres.—The determination of the perceptible 
minimum and the duration of luminous perception in persons 
of weak sight, by M. S. Durand.—On mountain sickness, 
by M. Kronecker.—On the modifications ind gee in the 
respiration by the altitude of Mt. Blanc, by M. J. Vallot. 
The relation between the volume of air Bak and the 
time spent at the summit is shown graphically, and also 
the variation in the weight of air breathed.—On a relation 
between the work and the so-called statical work equiva- 
lent on the ergograph, by M. Charles Henry and Mlle. J. 
loteyko.— Researches on the réle of the interstitial gland 
of the testicle. Experimental compensating hypertrophy, 
by MM. P. Ancel and P. Bouin. 
higher Artiozoa, by M. Georges Bohn.—The action of 
anethol upon the organism, by MM. E. Varenne, 
J. Roussel and L. Godefroy. Anethol shows no toxic 
effects, and may be safely used as a therapeutical agent.— 
The action of radium upon different tissues, by M. J. 
Danysz. The tissues, and especially the epithelial tissues 
of young animals, are much more sensitive to the action of 
radium rays than the tissues of adults.—On a consequence 
of cross-fertilisation, by M. Leclerc du Sablon.—On a true 
hybrid of chasselas by Ampelopsis hederacea, by M. Grille. 
—On the réle of calcium oxalate in the nutrition of plants, 
by M. Amar. The lime (in the form of nitrate) necessary 
to the constitution of the plant is entirely assimilated up to 
a certain proportion, depending on the species above this 
proportion the excess of lime is eliminated in ihe form of 
crystals of calcium oxalate-—On a disease of the leaves 
of the tobacco plant, by M. H. Bouygues.—On the Glacial 
deposits of the Garonne, by M. L. A. Fabre.—The geology 
of the western Alps, by M. Emile Haug.—Contribution to 
the study of the basaltic rocks of East Africa, by M. H. 
Arsandaux.—On the lakes of the Upper Engadine, by M. 
André Delebecque.—On the relation which exists between 
the proportion of gluten contained in different wheats and 
the proportion of total nitrogenous materials, by M. E. 
Fleurent. 
DIARY OF SOCIETIES. 
THURSDAY, January 7. 
Royat InstTiTuTIon, at 
F.R.S. 
RONTGEN SocieTy, at 8.30.—The Revelations of Radium: Dr 
Batten. 
3.—Extinct Animals: Prof. Ray Lankester, 
2 Gay Bs 
FRIDAY, January 8. 
Royat AsTRONOMICAL Society, at 5. —Transformation of Hansen's 
Tables: P. H.Cowell.—Note onthe Use of Long Focus Mirrors for 
Eclipse Work: H. H. Turner.—New Double Stars detected with the 
174 inch Reflector during the Year 1903: Rev. T. E. Espin.—Ephemeris 
for Physical Observations of Jupiter. t904-5: A. C. D. Crommelin.— 
The Rotation Period of Saturn in 1903: W. F. Denning.—The 
“Great” Magnetic Storms, 1875 to 1903, and their Association with 
Sun-spots, as Recorded at the Royal Observatory, Greenwich, communi- 
cated by the Astronomer Royal: E. W. Maunder.—»uggested Connec- 
tion between Sun-spot Activity and the Secular Change in Magnetic 
Declination: Mrs. E. W. Maunder.—On the Chromatic Correction of 
Object Glasses: A. E.Conrady.—The Aurora and Magnetic Disturb- 
ance: William Ellis.—Axd, time permitting, Discussion on Methods 
of Reproducing Astronomical Photographs. 
RoyaAL GEOGRAPHICAL Society, at 4.—Adventures in Antarctic Lands 
and Seas: Lieut. Ernest Shackleton. (Lecture to Young People.) 
SATURDAYP, January 9. 
Roya. INnsTiTuTiIoNn, at 3.—Extinct Animals: 
Prof. Ray Lankeste1, 
F.R.S. 
MONDAY, January 11. 
Royat GEOGRAPHICAL SOCIETY, at 8.30.—Exploration on the Southern 
Abyssinian Border: Captain Philip Maud. 
Victoria INSTITUTE, at 4.30.—Ancestral Worship: Rev. Arthur Elwin. 
TUESDAY, JANUARY 12. 
Royav InstTiTuTION, at 5.—The Development and Transfi ti 
Animals: Prof. L. C. Miall, F.R.S. 3 ie eee ii 
INsTITUTION OF CiviL ENGINEERS, at 8.—The Electrical Re-construction 
of ne South London Tramways’ on the Conduit System: Alexander 
illar 
WEDNESDAY, Janvary 13. 
SocieTYy OF ArTs, at 5.—Navigation of the Air: Eric S. Bruce, 
NO. 1784, VOL. 69] 
Phototropism in the | 
THURSDAY, JANUARY 14. 
INSTITUTION OF ELECTRICAL FNGINEERS, at {2.—The City and South 
London Railway ; Working Results of the Three Wire System applied 
to Traction, &c.: P. V. McMahon. (Adjourned discussion.)—On the 
Magnetic Dispersion in Induction Motors, and its Influence on the 
Design of these Machines: Dr. Hans Behn-Eschenburg. 
Royav InsTITUTION, at 5.—The Flora cf the Ocean: G. R. M. Murray 
F.R.S. 
MATHEMATICAL SOCIETY, at 5.30.—On Various Systems of Piling: Prof- 
J. D. Everett.—The Differential Equation 
2V  &V 
dE 
Ox, Axe" 
H. Bateman.—On the Notion of Lines of Curvature in the Theory of 
Surfaces: Dr. G. Prasad.—On Groups of Order #%g8: Prof. W. 
Burnside. 
+ 
Sociery oF ArTS, at 4.30.—The Presidency of Bombay: Sir William Lee- 
Warner. K.C.S.I. 
FRIDAY, JANUARY 15. 
Lord Rayleigh. 
INSTITUTION OF MECHANICAL ENGINEERS, at 8. 
SATURDAY, January 16. 
Royat InstiTuTI0N, at 3.—British Folk Song: J. A. F. Maitland. 
Rovat INsTITUTION, at 9.—Shadows : 
CONTENTS. PAGE 
The Critical State. By M. W.T.. . =o 20, 
The B.M. Hand-List of Birds and Catalogue of 
Eggs. ByR.L. . 218 
Modern Science Popularised. By G. H. B. 219 
Applied Psychology. By W. McD. of lo) nna en 
Our Book Shelf :— 
Jordan, Kellogg, and Heath: ‘‘ Animal Studies: a 
Text-book ot Elementary Zoclcey for Use in High 
Schools and Colleges.”—J. A ROS th 220 
Auerbach: ‘*Das Zeisswerk a die Carl- Zeiss- 
Stiftung in Jena” . oC 
Woods : ‘* Reasons Against the Theory of Evolution” 221 
Higgins: ‘* Lessons in Physics ” = 220 
Dodd: ‘‘ The Certainty of a Future Life in “Mars” 221 
Fenneman: ‘‘On the Lakes of South-eastern 
Wisconsin.”—E, R. W. .. 222 
Giglioli: ‘‘Malessere Agrario ed Alimentare i in Italia” 222 
Letters to the Editor: 
Does the Radio-activity of Radium depend upon its 
Concentration ?—Prof. E. Rutherford, F.R.S. 222 
Relative Motion and Conservation of Energy.—Prof. 
G.H. Bryan, F.R.S. .. 222 
The Universities and Technical Education. —Prof. 
Weakeemisher. oan 223 
Prof. Johannsen on Heredity. 26) Udny “Yule; 
The Reviewer . . 223 
The Heat of Radium.—Prof, Edmund J. “Mills, 
PERS See 224 
Rocket Lightning. _w. ae Lees Prof. I D. 
Everett, F.R.S. 224 
: 224 
Central Asian Exploration. (Llustrated. By T. H.H. 225 
Water Supply and Irrigation in the United States 
(Lilustrated.)  . . 226 
The Work of the Reichsanstalt. . . 228 
Recent Geological Observations in Cape Colony. 
By G. A. J. C. . 229 
The Climate of South America. ” By Ww. Af ‘Shi 230 
Notes : PEM ce rs yo. 6 (0) 
Our Astronomical Column :— 
Astronomical Calendars for 1904 . Bie obi) 
The Variable Star 1921, W Aurige . . : esa 
Light Economy in Spectrum Photography . oso, o. 28Y) 
Intensity of the Sun’s Light 234 
Prizes Proposed by the Paris Academy of Sciences 
for 1904... asin eal 
Research Grants of the Carnegie Institution |. . 235 
Survey of Scottish Lakes. . . 236 
The Senescence of Organs and its Influence on 
Pathological Phenomena. . . Pte ube 4 2347/ 
University and Educational Intelligence ote) etvay ee) 
Societiesiand;Academies) -).9.0) <i ceene eS 
Diaryiof Societies’ 25 c-ci ae sei ieissit-) en eeoM 
