116 
NATURE 
[ Fune 3, 1886 
graphical Service of the Army, by M. Perrier. Amongst 
these maps are one of France, scale I : 200,000, compris- 
ing the districts of Amiens, Melun, Lille, Méziéres ; one 
of Algeria, part 6, scale 1+: 50,009, districts of Azeffun, 
Jebel - Filfila, Jemmapes, Ben- Harun, Aine-Bessem, Rio 
Salado; and one of Tunisia, scale I: 200,000, districts of 
Nefta, Rejem-Matong, Dwirat, Wed-Fessi.—Note on a new 
form of purulent infection following an acute attack of pneu- 
monia, by M. Jaccoud.—Researches on the organisation of the 
star-fish, by M. Edm. Perrier. Amongst the collections 
brought back by the Cape Horn Mission were several specimens 
of a new species of star-fish (Asterias hyadez, E. P.), with their 
young still attached, a circumstance which has helped to throw 
fresh light on some disputed points connected with the ana- 
tomical structure of these animals.—Observations of the new 
comets 1886 a (Brooks I.) and 1886 4 (Brooks II.) made at the 
Observatory of Nice (Gautier equatorial), by M. Charlois. —On 
the geography of the Central Tunisian seaboard, by M. Rouire. 
A careful survey of the section of the coast between Hammamet 
and Susa has determined the existence of a large marine inlet at 
the head of Hammamet Bay, which receives all the drainage of 
Central Tunisia. It was also ascertained that at some more or 
less remote period the Halk-el-Mengel Sebkha was certainly 
navigable.— Determination of the absolute value of the wave- 
length of the ray D,, by M. J. Macé de Lépinay. A fresh 
attempt to settle this disputed point gives the general result— 
5°8917 x 107° (millilitre)} ; 
and in the air, at 0°, normal pressure— 
5 ‘8900 x ro~® (millilitre)’, 
—On a visual illusion: apparent motion of a small object when 
slightly illumined amid the surrounding darkness, by M. Aug. 
Charpentier.—A new electric fuse for exploding mines charged 
with powder or dynamite, by MM. Scola and Ruggieri. For 
this fuse the authors claim that it prevents all accidents from 
slow combustion, and also removes some other dangers and 
difficulties attending mining operations. —Note on an apparatus 
intended to test the efficacy, or ascertain defects in the pre- 
paration, of electric fuses, by M. Ducretet.—Description of the 
cyclone that swept over Madrid on May 12, by M. A. F. Nogués. 
—On two different conditions of the black oxide of copper, by 
M. Joannis.—Action of the air, silica, and kaolin on the 
alkaline haloid salts: new methods of preparing hydrochloric 
acid, chlorine, and iodine, by M. Alex. Gorgeu.—On the oxi- 
dation of oils, by M. Ach. Livache.—On a little-known cause of 
corrosion in steam-boilers, by MM. D, Klein and A. Berg.—On 
a new means of employing the iodo-ioduretted reaction in the 
research of the alkaloids, and especially of the leucomaines in 
urine, by MM. Chibret and Izarn.—A fresh study of Entoniscus 
(2. kossmanni, L. fraissi, E. moniezti), by MM. A. Giard and 
J. Bonnier.—On the embryogeny of Comatula (C. meditervanea), 
by M. J. Barrois.—Observations regarding the nervous system 
and certain organic features of the scutibranch gasteropods, by 
M. E. L. Bouvier.—On a new Ichthyobdella, by M. R. Saint 
Loup. This species, which the author describes under the 
name of Svorpenobdella elegans, was. recently observed in the 
Marine Zoological Laboratory at Marseilles.—On the super- 
ficial vascular apparatus of fishes, by M. P. de Sede.—On a 
fungus developed in the human saliva, by M. Galippe. This 
fungus, discovered in some saliva filtered by Pasteur’s apparatus, 
and cultivated in Van Tieghem’s cellules, belongs to the family 
of the Monilia. . The author proposes to name it Monilia spute- 
cola (sp.n.).—Remarks on the fifth volume of M. Habich’s 
Anales de Construcciones civiles y de Minas, presented to the 
Academy, by M. Daubrée. To this volume M. Chalon contri- 
butes a paper on the prehistoric monuments of Peru, which show 
a remarkable resemblance to the menhirs, cromlechs, dolmens, 
and other ‘‘ Druidical” remains in the west of Europe. They 
occur in large numbers in every part of the country.—At the 
request of M. de Lesseps, the President appointed a Commission 
comprising the members of the Sections for Geography, Navi 
gation, and Astronomy, with MM. Daubrée, Favé, Lalanne, 
and de Jonquiéres to study the differences of level caused by the 
tides in the Pacific and Atlantic Oceans. 
STOCKHOLM 
Academy of Sciences, April 14.—On the results of some 
experiments on the condition of electricity in a vacuum, by Prof. 
E, Edlund.—On the power and fineness of the hollow muscles of 
the frog, by Herr C, G. Santesson.—On the oxidation of cymal, F Books and Pamphlets Received ......... 
and on nitrocymal, by Prof. O. Widman and Dr. J. O. Bladin, 
—Mineralogical notes, by Dr. G. Flink.—Some remarks on the 
geological map of Sweden, by Herr E. Térnebohm.—Determi- 
nation of the definite elements of the orbit of the Comet VIII. 
(1881), by Dr. K. G, Olsson.—Micrometrical determinations of 
some telescopic star clusters, by Prof. H. Schultz.—Contribu- 
tions to the theory of wave-motions in a gaseous medium, by 
Prof. A. V. Backlund.—On the integration of the differential 
equation in the problem of N bodies, by Prof. G. Dillner. 
May 12.—On a new method for determining the velocity 
of the electric molecules in a current of a certain power, 
by Prof. Edlund. — Contributions to the knowledge of the 
discharge of the Ruhmkorff coil, by Hr. T. Moll. —A 
method for increasing the convergence of periodical series, 
by Hr. C. Charlier.—Research on a non-linear differential 
equation of the second order, by Prof. H. Gyldén.—An 
account of the Zoological Station of Christineberg, in the 
province of Bohus, belonging to the Academy, by Prof. Syen 
Loyén.—Researches on the changes of the arsenious oxide in 
contact with putrid animal matters, by Prof. Hamberg.—A 
balance constructed by Hr. F. J. Lemcke for determining the 
consumption of the normal light in the measurement of the 
power of the light, exhibited by Prof. F. L. Ekman.—New or 
imperfectly known Isopoda, part 3, by Dr. C. Bavallius—On 
naphtoé acids, by Dr. Ekstrand. 
BOOKS AND PAMPHLETS RECEIVED 
“Ting-Nam,” by B. C. Henry (Partridge).—‘‘Infant School Manage- 
ment,” by S. S. Hale (Stanford).—‘“‘ The Romance of Mathematics,” by P. 
Hampson (E. Stock).—‘‘ Handy Guide to Norway,” by T. B. Willson 
(Stanford).—‘* Chemical Arithmetic,” by J. M. Coit (Heath, Boston).— 
“ Summary Report of the Operations of the Geological and Natural History 
Survey of Canada,” part 3 (Maclean, Ottawa). — “ Earthquakes of Ischia,” 
by H. J. Jobnston-Lavis (Dulau).—‘‘ La Mythologie,” by A. Lang ; traduit ~ 
de l’Anglais par Léon Parmentier (A. Dupret).—‘‘ Determination of Rock- 
forming Minerals,” by Dr. E. Hussack, translated by Dr. E. J. Smith 
(Wiley, New York) —‘‘Studies from the Biological Observatory, Johns 
Hopkins University,” vol. iti. No. 6.—‘‘Catalogue No. 10 of Physical 
Apparatus for Universitizs and Superior Schools”’ (Ff. Ernecke, Berlin).— 
‘* Account of the Graphic Method in Use for Determining the Co-ordinates 
of the Secondary Trigonometrical Stations of the Ordnance Survey,” by J. O. 
Farrell (Eyre and Spottiswoode). —‘‘ Modern Armour for National Defence,” 
and edition, by W. H. Jacques.—‘‘ Ericsson’s Destroyer and Submarine 
Gun,” by W. H. Jacques.—‘ Heavy Ordnance and National Defence,” by 
W. H. Jacques (Putnam, New York).—‘‘ Circulars of Information of the 
Bureau of Education,” No. 4, 1885: Education in Japan (Washington).— 
“John Bunyan and the Gipsies,”” by J. Simson (Maclachlan, Edinburgh). 
CONTENTS PAGE 
British Fungig . oye) cbeucs: ess astro incelals SS 97 
A Medical Index-Catalogue. By A. T. Myers . . 98 
Our Book Shelf :— 
“* Mémoires de la Société des Sciences Physiques et 
Naturelles'de Bordeaux’? <_< 205 0. -) leu 99 
Hrost’s ‘“Solid/Geometry] 5. -\ a)iciie syn ina 
Letters to the Editor :-— 
Flora of South Africa.—Prof. C. Piazzi Smyth . 99 
The Composition of the Edible Bird’s-Nest.—Dr. H, 
B Guppy) os 2 8 se oe eke eo 
“« Arithmetic for Schools.”—Rev. John B. Lock ._ I00 
Sunspots and Prices of Indian Food-Grains. By 
Frederick Chambers. (J/lustrated) ..... + + 100 
The Physical Appearance of Mars in 1886. By W. 
F. Denning 2» eae, (el gece: sp Gena deci, Goof mites Koen Cee 
M. Cornu on the Hydrogen Function of Certain 
Metals! \(//strated)\e ens nie ae ae ete ae 
Vegetation of South Georgia. By W. Botting 
Hemsley f.0; wo. heres bet Goss = Reg Uti 
NiOtéSi.6 cs-0c. Herecpocs’ fhe Sias cle hie ys stelelioigo eon 
Our Astronomical Column :— 
A Catalogue of ‘‘Comparison” Stars ...... I10 
The Paris\@Observatory ~ . s = « < \« © \«) «ioe 
‘Notes on Variable’Stars . . . = .) <).-) = c)ses-ieennaa 
The “iGanals'?vof Mars| = ©... 1) <yoel-) ieneel 
Astronomical Phenomena for the Week 1886 
JUNE IGT Fie oi sits, so ol Ns) Biel oie) Mol lng eg 
Geographical(Notes) 535 oe) ice post ae 
On Recent Progress in the Coal-Tar Industry. By 
Prof. Sir Henry E. Roscoe, M.P., F.R.S. ... III 
University and Educational Intelligence . . . . . II4 
Societies andsAcademiesin ie en cetnnen tenn 4 
II 
Ce 
