570 



NATURE 



[April I 7, 1 879 



and the " Argille scagliose," by Theodor Fuchs. — On the flora 

 of the countries round the Mediterranean and their dependence 

 from the soils, by the same. — On the fossil flora of Parschlugf, in 

 Styria, by Dr. C. von Ettingshausen. — On the development of the | 

 embryo oiAsplenium shepherdi, Spr., by F. Vouk. — On the internal ' 

 cells in the antheridium cell of the pollen grain of certain coniferie, 

 by A. Tomaschek. — On the origin of aptychus-limestone, by Th. | 

 Fuchs. — On the light line in the prism cells of seed scales, by 

 Dr. R. Junowics. — On the encircled specks in the wood of trees, ! 

 by Dr. J. Kreuz. — On the firmness and elasticity of vegetable | 

 tissues and organs, by Th. Weinzierl. — On the resinous ducts of j 

 certain coniferae, by Dr. Kreuz. — On the development of the 

 pollen of Colchicum autumnale, L., by A. Tomaschek. — On 

 some accessory appendages to the skull of Leporidae, by Dr. A. ! 

 von Mojsisovics, — On cork and cork tissues, by Dr. F. von j 

 Hohnel. — Histo-chemical researches on xyllophiline and coni- 

 ferine, by the same. — On the phanerogamic flora of the Sand- 

 wich Islands, by Dr. H. W. Reichardt. — On the protoplasm of 

 the pea, by Dr. Ed. Tangl. — On the undulating nutation of the 

 internodes of the stems of plants, by J. Wiesner. — On the be- 

 haviour of Phloroglucine and of some similar substances towards 

 the woody cell membrane, by the same. — On the degeneration 

 in the leaf-shoots of some Amygdalere, caused by species 'of 

 Exoascus, by E. Rathay. — Researches on Tunicata, by C. 

 Heller. — On some new genera and species of Neuroptera, by 

 Dr. F. Brauer. — On the originals to Ign. von Bom's Testaceis 

 Musei Csesarei Vindobonensis, found in the Imperial Zoological 

 Museum, by the same. — On the embr>'ology of ferns, by H. 

 Leitgeb. — Geological researches in the western part of the 

 Balkan and the surrounding districts, by Franz Toula. — On some 

 peculiar apertures in the corolla leaves of Franciscea macrantha, 

 Pohl, by M. Waldner. — On the basaltic lava of the Eifel 

 Mountains, by E. Hussak. — On the origin of holes and inden- 

 tures in the leaf of Philodendron pertustim, Schott, by F. 

 Schwarz. — Ichthyological researches, by Dr. F. Steindachner. — 

 On the subterranean water- courses and basins, as well as on the 

 clearness and transparency of certain lakes, and on the formation 

 of lakes generally, by Dr. A. Boue, 



Sitzungsberichte der physikalisch-medicinischen Societdt zu 

 Erlangen (part 10, November, 1877 — August, 1878) contain the 

 following more interesting papers : — On the fertilisation and 

 division of the ovum of toxopneustes, by Dr. E. Selenka. — On the 

 history of development of Jacobson's organ, by Dr. R. Fleischer.— 

 On the theory of absorption and fluorescence, by E. Lommel. — On 

 the physiological action of nitrobenzole and of aniline, by W. 

 Filehne. — On the so-caUed soor-fungus and its identity with 

 Mycodcrma vini, by M. Reess. — On the changeability of the 

 angles of crystals, by Dr. Fr. Pfaff. — On the theory of normal 

 and abnormal dispersion, by E. Lommel. — Various mathematical 

 papers, by M. Noether and Prof. E. Liiroth.— rOn the modifica- 

 tion of sound phenomena in the human body, by F. Penzoldt. — 

 On the theory of double refraction, by E. I.ommel.— On the 

 equations of the seventh degree, by F. Klein. — On some expe- 

 riments made with droscra, by Drs. C. Kellerman and E. von 

 Ramner.— On chelidonic and malic acids, by Dr. O. Liezen- 

 Biayer. — Thermophysiological investigations, by J. Rosenthal — 

 On the derivates of cymol and of toluylic acid, by E. von 

 Gerichten.— On the sexual organs of dibranchiate cephalopoda, 

 by Dr. J. Brock. — On two new fluorescent substances, by E. 

 Lommel.— On the influence of the changes in temperature and 

 pressure upon the doublerefraction of light, by Dr. E. Pfaff. 



Jahrbtuh der k.k. geologischen Rdchsanstalt (vol. xxviii. 

 part 4, October — December, 1878) contains several highly in- 

 teresting treatises, viz. : — On Alpine phosphates, by J. Gamper. 

 — On the production of common salt from the Russian steppe 

 lakes, by Dr. C. O. Cech. — Observations on the Jurassic forma- 

 tion in the Carpathian cliffs, by Victor Uhlig. — On the artesian 

 well in the Stadtwiildchen near Budapest, by Wilhelm Zsig- 

 mondy. — On Emanuel Kaiser's views on the hercynian fauna, 

 and the limit between the Silurian and Devonian formations, by 

 Dr. E. Tietze. 



Rede Istituto Lombardo di Scienze e Lettere. Rendiconti. 

 Vol. xii. fasc. iii. We note the following papers in this number : — 

 New phenomena observed in treatment of wine and must, with 

 lime (continued), by Prof. Pollacci. — New physio -pathological 

 researches on pulmonary phthisis (continued), by Prof. Giovanni. 

 — Project of an electrical indicator of the level of water in a 

 flood, by Prof. Ferrini. — Amplitude of oscillations of the 

 declination-needle during 1877 and 1878, at the observatory of 



Brera, in Milan, communicated by S. Schiaparelli. — Determi- 

 tion of the difference of longitude between Milan Observatory 

 and those of Padua, Monaco, and Vienna, by Prof. Celoria. 



Fasc. iv. — First lines of introduction to the study of Italian 

 bacteria (continued), by S. Trevisan. — Composition of butters in 

 Lombardy, and analysis of butter in general, by Dr. Menozzi. 

 — New researches on the rot of vines, by Prof. Garovaglio. — 

 Researches on polar systems, by Prof. Jung. — On provision 

 against trichina, by Prof. Bizzozero. 



Fa>c. V. — A new process of microscopic art, by Prof. Golgi. — 

 Fruitful copulation of a dog with a cat, by Prof. Lemoigne. — 

 On the intestinal anguillula, by Prof. Cantoni. 



Atti della R. Accademia del Lincei, February, 1879. — Necro- 

 logical memoir of Gastaldi, by S. Sella. — On the expression of 

 one of the limits in the correction of the elliptical co-ordinates 

 in the theory of planetary perturbations, by S. De Gasparis. — 

 On the composition of rocks of the mines of Montecortini, by S. 

 Cossa. 



Rivista Scientifico-Indusiriale, Nos. 4 and 5, 1879. — We 

 note in these numbers a memoir by Prof. Perotti, on governing 

 combination of the elements of gaseous mixtures. 



No. 6. — On a baricentric property of the triangle, by Prof, 

 E. Cavalli. — On a new experiment on electrolysis with weak 

 electromotors, by Prof. A. Bartoli. — On the telephone and 

 microphone as musical instruments, by G. Mocenigo. — De- 

 scription of some new plants recently introduced into horti- 

 culture, by E. O. Fenzi. There plants are Gentiana algida, 

 Prinmla capitata, and P. stuartii, Nicotiana acutifolia and N. 

 suaveolens, Eremurus robustus. — On two new species of Myria- 

 poda, Polydesmus sicidus and Atractosoina nigrum, by Prof. F. 

 Fanzago. — On a new reagent for cobalt, by Mr. Tattersall. — On 

 poisonous colours, by the editor. 



Archives des Sciences physiques it naturelles, March. — From 

 this part we notice the following papers of interest : — On the 

 influence of coloured light upon the development and growth 

 of animals, by Emile Yung. — On the effects of induction coil- 

 upon the nervous system, by M. Schiff. — On an acceleration of 

 the process of tanning by means of phosphoric acid, by E. Ador. 

 — On methyl-aniline and toluidine and the colouring-matters 

 derived from these compounds, by MM. Reverdin, Monnet, and 

 Nolting. — On alizarine blue, by M. Graebe. — The other papers 

 contained in the part have been noticed by us elsewhere. 



SOCIETIES AND ACADEMIES 



London 



Mathematical Society, April 10.— C. VJ. Merrifield, 

 F.R.S., president, in the chair. — Mr. Donald McAlister was 

 elected a Member, and Messrs. A. J. C. Allen and E. Anthony 

 were proposed for election. — The following communications 

 were made : — Notes on quantics of alternate numbers, used as a 

 means for determining the invariants and covariants of quantics 

 in general, by the late Prof. Clifford, F.R.S. (communicated by 

 Dr. Spottiswoode, P.R.S.).— Note on geometrical maxima and 

 minima, Mr. J. Hammond. — On a class of fractions, Mr. R. 

 Tucker. 



Linnean Society, April 3. — William Carruthers, F.R.S,, 

 vice-president, in the chair.— Mr. W. T. Th selton Dyer exhi- 

 bited the inflorescence of Gynerium saccharoides, grown at Ke\^•, 

 but which had died during the winter severe weather. Except- 

 ing through Mr. Spruce's researches on the An>azons, little is 

 known respecting this handsome plant, which differs from the 

 Pampas grass in habit, and is tropical like maize, &c. — Dr. H. 

 Trimen, in dealing with the subject of the myrrhs of commerce 

 and pharmacy, showed the unique Balsamodendron myrrha, 

 Nees. It was gathered by Hildebrandt in Somali Land, 1873, 

 and possesses but few leaves and a single fruit ; the traveller, 

 however, saw the myrrh exuding fsom the tree itself. The 

 original type specimens of B. myrrha, collected by Prof. Ehren- 

 be^ in Arabia, were also exhibited, and, according to Dr. Tri- 

 men, Hildebrandt's late statement of their identity with the fore- 

 going seems well founded. Ehrenberg's other myrrh plant, the- 

 B. Ehrenbergianum, Berg., with his notes attached, and the B. 

 Playfairii, Hook, fil., from Somali Land, with its gum called 

 "Hotai," and other examples of varieties of myrrh andbdellmm 

 were placed before the Society and commented on by Dr, Tri- 

 men. He specially adverted to the liberality of the authorities- 



