objeciions raised by the Italian observer to the cyclonic théory 
on the ground of the appearance of prominences where there 
areno spots. M. Faye considered that the pores, which are | 
vertical cyclones, are the cause of the circulation of the solar 
hydrogen, and hence of the prominences. He also replied to some 
objections relating to the direction of the circular motion in 
cyclonic spots,—New researches oh the analysis and the theory — 
of the pulse in normal and abnormal states, by M. Bouillaud. — 
The author announced the discovery of a secondary beat in the — 
pulse, which he ascribed to a contraction and expansion of the — 
arteries themselves.—On choleraic dejections as agents in the 
propagation of cholera, by M. Ch. Pellarin.—On the changes of — 
form exhibited by Comet 1V., 1873, by MM. Rayet and André, 
—On the movement of an elastic wire one end of which has a 
vibratory motion, by M. E. Mercardier.—On the products of 
the oxidation of meteoric irons and a comparison of them with — 
the terrestrial magnetites, by M. S:an. Meunier.—Process for the — 
preparation of a new aniline red, by M. E. Ferriére. The new 
colour is prepared by acting on acetate of aniline with ammo- — 
niacal cupric hydrate, and then saturating with sulphuric acid. 
On concentration ammoniac sulphate is deposited, ani the 
colour remains. It is a purple red. PB). 
Sept. 22.—M. Bertrand in the chair. —On the chairman taking © 
his seat, he at once proceeded to announce the deaths of M. 
Coste, of the Section of Anatomy and Zoology, and of M, 
Nelaton, of the Section of Medicine and Surgery; and to ex- 
press in a few words the sorrow of the Academy at the grievous 
loss it had thus sustained. At the conclusion of the chairman's 
remarks. M. le Baron Larrey at once proposed that, to marl: its 
sense of the double loss, the Academy should not hear any 
papers at the meeting, and that the correspondence only should 
appear in the Comfles Rendus. The following papers were ac- — 
cordingly printed :—Thermic researches on the condensation of — 
gases by solids—continuation : absorption of hydrogen by pla- — 
tinum-black, by M. P. A. Favre.—Certain observations on the 
winged form of the PAylloxera vastatrix in connection with the 
propagation of the insect, by M. Max. Cornu.—On the proper 
time for the application of the submersion treatment to vines — 
tainted by Phylloxera, by M. L. Faucon.—On the proportion of 
carbonic anhydride in atmospheric air, and on its variation with | 
the altitude, byM. P. Truchot. The author finds that the quantity — 
of this gas diminishes as the altitude increases. —On coralline, by 
M. Commaille.—Note on a meteorite with a phosphorescent — 
train seen on the night of September 28, 1873, by M. Chapelas, — 
—The second part of M. Mercadier’s note on the movement o 
an elastic wire, one end of which is endued with a vibratory 
motion, : 
were placed a minute piece of wood and a small piece of worsted : 
and in neither of these cases was the least change perceptible 
after the lapse of a considerable time in the position of the 
object, nor ia that of any of the glands, either those in contact 
with it orthe more remote ones. It wotild appear, therefore, 
that the organised structure of the fly and of the piece of raw 
meat had some power of exciting this motion which is not 
possessed by matter of a different description. 
SCIENTIFIC SERIALS 
Poggendorff’s Annalen der Phystk und Chemie, No. 6, 1873.— 
This number commences with a paper by M. Seebeck, on the 
motion of sound in bent and branching tubes. THe finds, among 
other things, that the gradual bending of a tube has little effect 
on the size of wave-length, but if a tube be suddenly bent to an 
angle, the sound-motion is considerably affected ; iv would seem 
that the motion of the air-particles did not suddenly alter in 
direction with the tube. —A series of experiments on the electro- 
motive and thermo-electric forces of some metallic alloys, 
on contact with copper, is detailed by M. Sundell. The 
alloys examined were bismuth-tin, bismuth antimony (in 
various proportions), and German silver; the method em- 
ployed in the case of electromotive force being that of Edlund, 
lased on the fact, that a galvanic current, passing through an 
electromotor, produces in it, proportionally to its electromotive 
force, an absorption or production of heat, according as the cur- 
rent is in the same direction as that of the electromotor, or con- 
trary to it. The alloys, like the pure metals, have the same 
order in electromotive as in thermo-electric series ; and it appears 
that the proportion of thermo-electric to electromotive force is 
constant, and® equal to that for the combinations iron-copper, 
and copper-bismuth. Comparative experiments on various 
pyrometric methods—air thermometer, expansion of solid bodies, 
calorimeter, dissociation of a compound, and electrical re-ist- 
ance, lead M. Weinliold to a preference for the last (or Siemens’), 
as the most reliable. The calorimeter, properly used, also gives 
good results. —M. Lorenz, of Copenhagen, furnisies a new de- 
termination of the electrical resistance of mercury, in absolute 
measure. He attributes the discordance in previous results to 
the employment of induced curvents, of variable strength, and 
he adopts an ingenious method in which a constant electro- 
motive force without current, is applied. -The result of five 
experiments is I mercury tinit = 0°9337 Olim’s unit, or the 
mercury unit equal to 0°9337. 10" absolite units —Of the re- 
maining papers we may note one by Kohlrausch on the electro- 
chemical equivalent of silver, and mineralogical notes oh wolfram, 
and on a néw mineral, ardenite. 
BOOKS RECEIVED 
Enc.isu.—Centrifugal Force and Gravitation: John Harris (Supplement 
A.).—Half Hours with the Microscope. New Edition ee 
and 
Zoological Record, Vol. viii., Edited by Prof. Newton (Van Voorst),—C 
ters on Trees: M. and E. Kirby (Cassell).—The Amateur Greenhouse 
Conservatory: Shirley Hibberd (Groombridge).—Proceedings of the — 
Literary and Philosophical Society cf Liverpool, Vol. xxvi. (Longmans).— 
A Discourse on the Pursuit of Truth: A. Elley Finch (Longwauey : 
RO ice eechiorce Physiographie : H. Rosenbusch (Williams’& 
orgate). : 
SOCIETIES AND ACADEMIES 
LONDON 
Royal Horticultural Society.—General Meeting, Aug. 20, 
—W. A. Lindsay, Secretary, in the chair.—The Rev. M. J. 
Berkeley said Kerson’s seedling gooseberry, a fine variety which 
gained a first-class certificate at the last ‘meeting, turned out to 
be not a garden seedling but one originally taken from a common ; CONTENTS Pace 
hedge in the neighbourhood of Peterborough. Tais was not a A Be Stupies . Ma’ By A. Ro Wackabe REG ee rs 
solitary instance of a fine variety of fruit being found in such | [isiensdo rue kumeRic Ne Eee , 
places—the Bess Pool apple having been discovered in a planta- Fellowship at Magdalen College.—Prof TutseLton Dyer. » 1 464 
tion at Nottingham, Mr, Berkeley then alluded to a disease of The Sphygmograph.—br. A. L. GALABIN. «4 2 + + 5 6 5 Og 
the crocus very destructive to the gladiolus, and which also BOE oe a ey ttn eo ane aa 
teslett ff x acer ze : On the Polarisation of Light in the Rainbow —G. Fintay. . . > 
attacked the saffron crocus and the narcissus; it was first Autumnal Typhoid Epidemics —W. Marrtieu Wititams, F.C.S. 465 
described by Montague under the name of 7acon. He concluded Venomous Caterpillars—C. Even ; A. GILLANDER. . . . . + 466 
by remarking that vegetables treated with sewage were apt to be fieoke eS en ee Bi ae a adiow ok Pat Gegenaee 467 
much deteriorated in flavour, rage H eri » 
; 23) i : FUNCTIONS "0.03 woe ee 20 1.18) eS 
Sept. 3.—General Meeting.—Dr. Kellock in the chair, —Ad- | Tue Fkencu AssocraTION FOR THE ADVANCEMENT OF SCIENCE . . 4 ; 
verting again to the subject of Zacon in the Gladiolus, the Rev. Be AES TECRGLOCIC RL Comankss aT Mra ts ‘ dnichs Soca ae 
M. J. Berkeley was inclined to attribute it to ‘ sunstroke:’—A sIRMINGHAM NaTURAL HisTORY AND MICROSCOPICAL SOcIETY . . 469 
bunch of grapes was exhibited from the parent plant of the fae tn og ae ry “yp ee iaae mores a eo fide en BC 
Hampton Court vine; it dated from 1761.—A fungus (Zentinus Nore ee ee 
lepideus) was sent by Sir Gilbert S f OLECULAR EvoLuTION . Bis pin Sase gto? 4 ond oo 
at Gre se y Sir Gilbert Scott, from the roof of a church Tue British Association Mgetinc At BRADFORD. . 2... 
y' j Section A.—Secriciial Proceedings: ¢ * . } : 4). 2 6 
Pais 6 CB 34 3 a shoe hk senak oeltee 
F he ee ree a ” * » » % cena oe °) 
Academy of Sciénces, Sept. 1s.—M. Bertrand in the Sai HE Sakis” ” * Syye Se eck oe eae 
. The ree 2 Sh Eh Oe bn a - Ae NTI £ 0 Ses be ee Eee ee 
chair, —The following papers were'read >—aednswer to Father | cc ortes awn ACADEMSEMMISTS) = lc) cence ena 
a-vuitii’s last note, by M, Faye, The author replied td the | Booxs Receivap. . . . « + mre Seto a 
