ie id 
AucGusT 20, 1914] 
situated near the Abbey Mound in Hartshill Hayes, 
and have yielded over fifty different species of trilo- 
bites—each ranging through one or more of about 
fifteen fossiliferous horizons in the sequence. ‘The 
fauna shows marked affinities with those of the equiva- 
lent beds in Wales, Scandinavia, and Bohemia.— 
T. C. Nicholas: The trilobite fauna of the Middle 
Cambrian of the St. Tudwal’s peninsula (Carnarvon- 
shire). In a previous paper on the geology of the St. 
Tudwal’s peninsula approximate determinations were 
given of the fossils found in the Upper Caered Mud- 
stones and Nant-pig Mudstones, both of Middle Cam- 
brian age. The object of the present paper is to give 
detailed descriptions of several forms which are either 
new or of particular interest, namely, Agnostus 
kjerulfi, two new species of Agnostus, a species of 
Agraulos, of Dorypyge, of Corynexochus, and Soleno- 
pleura applanata, and to give brief notes on a number 
of other species, including Agnostus punctuosus, A. 
exaratus, A. fissus, A. altus, A. truncatus, Microdiscus 
punctatus, Conocoryphe cf. dalmani, and Paradoxides 
hicksii. The vertical distribution’ of the different forms 
through the Upper Caered and Nant-pig Mudstones 
is tabulated and compared with that of other areas, 
particularly the succession recently established by 
Mr. V. C. Illing in the Abbey Shales of Nuneaton. 
This comparison strengthens the opinion already put 
forward in the previous communication, that there is 
a non-sequence at the base of the Lingula Flags in 
the St. Tudwal’s Peninsula. 
Paris. 
Academy of Sciences, August 3.—M. P. Appell in the 
chair.—J. Boussinesq: ‘Theoretical considerations on 
the filtration of liquids by sand or by other analogous 
porous media, and on the analogy between electric 
currents with those of filtration.—L. Lecornu; The 
aerodynamic laboratory of Auteuil. A summary of 
the work recently undertaken by G. Eiffel, including 
a three-dimension logarithmic model composed of 
three scales of different directions, carrying as gradua- 
tions the logarithms of the weight of the apparatus, 
its velocity, and the power developed by the propeller. 
—H. Le Chatelier:; The iron-zine alloys. Remarks on 
a recent communication of M. Taboury, directing 
attention to earlier work on the same subject by 
Berthier, Le Chatelier, and Wologdine.—H. Parenty : 
The constitution of the jet of elastic fluids below 
various orifices.—Th. Anghelutza and O. Tino: The 
polar equation.—Thadée Peczalski: Corresponding 
states with respect to temperature.—R. Fosse, A. 
Robyn, and F. Frangois: The gravimetric quantitative 
analysis of urea in the blood. Details of the applica- 
tion of the xanthhydrol method, in which the urea is 
weighed as the compound 
co.(x H. CH< EO) 
ott4 2 
—E. Gourdon: The mineralogical constitution of 
Jenny Island (Antarctic). The island consists of a 
massif of gabbro, with numerous lodes of andesites 
and andesi-labradorites. Ten complete analyses of 
the minerals are given.—J. Chaine: Observations on 
the study of the phylogenic development of the soft 
parts and hard parts of the organism.—Eugéne 
Pittard ; Comparative analysis of some body magni- 
tudes in Bulgarians of both sexes. The difference 
in height between the sexes is 13 cm. larger than is 
usual for races of medium height. The skull is rela- 
tively more developed in the women than in the men. 
—Pierre Girard: An attempt at a physical scheme for 
the semipermeability of living cells to ions. A study 
of the diffusion of solutions of barium chloride into 
dilute acid and alkaline solutions, and a suggested 
NO. 2338, VOL. 93] 
NATURE 
057 
| modification of the Ostwald hypothesis of the semi- 
permeability of membranes to ions and not to mole- 
cules, with application to the mechanism of the ex- 
changes of electrolytes between living cells and their 
media.—Mme. Marie Phisalix : Vaccination against the 
poison of Heloderma suspectum with cholesterol and 
with the venom itself. Guinea pigs were found to 
have been immunised against double the usual fatal 
dose of the poison either by cholesterol or by the 
venom itself. The venom contains at least two active - 
substances, one possessing vaccinating properties de- 
stroyed by five minutes’ heating to 80° C., the other 
toxic and resistant to heat.—J. Cantacuzéne ; A micro- 
organism isolated in scarlet fever. A description of 
an organism, accompanied by photographs, and of 
the lesions caused by its inoculation into Macacus 
rhesus. 
August 10.—Georges Lemoine: Notice on the life 
work of Louis Henry.—J. Boussinesq: Theory of the 
transpiration of gases through porous media.— 
Edmond Delorme; Battle wounds: advice to surgeons 
in the field.—The Perpetual Secretary announced the 
death of M. Considére, correspondant for the section 
of mechanics.—MM. Chaspoul and Bachalard: The 
action of radium on the sensibility of crystal 
detectors used in wireless telegraphy. The num- 
ber of sensitive points on a_ crystal detector 
used in wireless telegraphy is notably increased under 
the influence of the radium emanation.—J. Blumenfeld 
and G, Urbain: The ultra-violet spectrum of neo- 
ytterbium. <A list of wave-lengths of the spectrum of 
the neoytterbium the preparation of which was de- 
scribed in a recent paper in the Comptes rendus.— 
Francois Canac: A new method of crystallographic 
measurements by means of the Réntgen rays. Details 
of measurements on a crystal of cane sugar. The 
advantages claimed are that the reticular structure 
alone is concerned, and not the crystal faces, and the 
ratio of the parameters is known with exactness, 
since the reticular planes of great density are shown 
without ambiguity by the intensity of the spot which 
they give.—M. Herlant: The mechanism of the first 
segmentation of the egg of the sea-urchin in experi- 
mental parthenogenesis by J. Loeb’s method.—Albert 
Frouin and D. Roudsky : The bactericidal and antitoxic 
action of lanthanum and thorium salts on the cholera 
bacillus. The therapeutic action of these salts in 
experimental cholera. Thorium and lanthanum salts 
are not poisonous, and do not interfere with digestion. 
It would appear from the experiments cited that 
thorium sulphate may be usefully employed in the 
treatment of cholera.—M. and Mme. Victor Henri: 
Study of the metabiotic action of the ultra-violet rays. 
Theory of the production of new microbial forms by 
the action on the different nutritive functions. Under 
the influence of a short irradiation, the anthrax bacillus 
would appear to lose the power of secreting proteolytic 
ferments, whilst retaining the power of producing 
amylolytic ferments. 
CALCUTTA. 
Aslatic Society of Bengal, July 1.—Ramesh Chandra 
Majumdar: The date of Chashtana, The date of Chash- 
tana, the founder of the long line of Saka kings, has 
hitherto been held to be about 130 a.p. It is shown 
that such a theory is untenable in the light of modern 
researches, and that Chashtana most likely flourished 
at the end of the first century a.pD.—Nilmani Chakra- 
varti: Spirit belief in the Jataka stories. The belief 
had its origin in the soul theory, according to which 
tree had a soul. There were two kinds of 
even a 
spirits, good and evil. The former class was sub- 
divided into three classes, viz. I. Spirits dwelling in 
towns, houses, etc. II. Spirits dwelling in trees. 
