tuberosa, Vorticella microstoma, Vaginicola crystallina, Kerona mytilus, Astasia limpida, Amoeba princeps. The paper was illustrated by large drawings from life of the various species alluded to. A very beautiful Rotifer, not figured either in Pritchard or the Micrographical Dictionary, was also described by the author, its cilia being as fine as those Melicerta ringens. It is generally found ensconced in a gelatinous matter, combined with decayed vegetable substance, in the fork of the leaves of Anacharis. The habits of a voracious parasite, Trachelias vorax, which attacks Brachionus Bakeri, were illustrated by diagrams. The Trachelias in a quarter of an hour entirely destroys the interior of the Rotifer, and leaves only its empty shell; and in one instance the Trachelias was seen to divide itself into four while in the interior of the Brachionus, quitting the empty shell in sections. The author, in conclusion, hoped that the short sketch he had given would tend to awaken an interest in this easily accessible pond, and that other members might be induced to examine for themselves the life-history and developments of these interesting living forms. The meeting concluded with the usual conversazione. TUNBRIDGE WELLS MICROSCOPICAL SOCIETY.* The monthly meeting took place on Tuesday, March 1, at the Rev. W. W. Elwes' residence; the President, Dr. Deakin, in the chair.The subject for consideration was Diatoms, which was opened by a very interesting address from the chair, explaining their peculiar structure and appearance under the microscope, and their mode of reproduction. Some very beautiful specimens were exhibited. The same subject will be pursued at the next monthly meeting. Two new members were elected. ABERDEEN MICROSCOPIC SOCIETY.† The Aberdeen Microscopical Society met in the grammar-school on Tuesday, 8th March, Dr. Ogilvie in the chair.-After the ordinary business, Mr. Clark and Mr. Leys occupied the evening, the former on the classification and arrangement of the Society's Cabinet and Catalogue, the latter on the Sea Urchin (Echinus lividus), giving a brief outline of the shell spines and other appendages of the skeleton. He then described his mode of cutting and grinding the spines as longitudinal and transverse sections. After some remarks by the chairman and other of the members, a vote of thanks to Messrs. Clark and Leys was unanimously recorded. READING MICROSCOPICAL SOCIETY.‡ 15th March, 1870.-Captain Lang presided, and exhibited specimens, mounted in balsam, of his Difflugia triangulata, and of another *Report supplied by Rev. B. Whitelock. + Report supplied by Mr. W. J. Johnston. Journal, In both flask-shaped species, still unnamed, as far as he is aware. cases the surfaces of the tests, which are evidently of a chitinous and not siliceous nature, have a beautifully-regular, hexagonal reticulation. It is a curious fact that, though the bodies of such animals appear to be nothing but sarcode, and though the specimens shown had been subjected to the intense heat of the flame of a spirit-lamp, yet, in each case, the scarcely-shrunken body of the animal could be seen suspended within the diaphanous test, exactly as in its living retracted state, but surrounded by a ring of agglomerated thorn-shaped particles, apparently of a denser nature. Captain Lang at first thought these were Diatoms on which the creatures had fed, but examination proved that they were not; and as this outer ring is present in each specimen, and of similar form, it is not likely to be expressed food. Collins' dissecting compound microscope, with erecting prism, and Möller's test-slide, were brought before the notice of the meeting; and specimens of Podocystis spathulata, Asterionella, parasite of owl, elaters and spores of Pellia epiphylla, were exhibited by various members. BIBLIOGRAPHY. Régénération des Vers à soie et notablement des Vers à soie de Pays. Rapport présenté à la Chambre de Commerce de Lyon. Par L. G. Delerue, Ingénieur du Service municipal de Lyon. Lyon. Storck. Eléments de Botanique. Par le Docteur Léon Marchand, Aide d'Histoire naturelle à la Faculté de Médecine de Paris. Ouvrage rédigé conformément aux Programmes officiels de 1868 pour l'Enseignement secondaire spécial (année préparatoire). Paris. L. Hachette et Cie. Quain's Lehrbuch der Anatomie. Bearbeitet von C. E. Hoffmann. Erlangen. Besold. Programme du Cours d'Histologie professé à la Faculté de Médecine de Paris. Par Prof. Ch. Robin. 2e Edition, revue et développée. Paris. J. B. Baillière et Fils. Ueber die Entstehung der Arten durch natürliche Zuchtwahl, oder die Erhaltung der begünstigten Rassen im Kampfe um das Dasein. Von Charles Darwin. Stuttgart. E. Schweizerhart. Untersuchungen aus dem Institute für Physiologie und Histologie in Graz. Von Alexander Rollett. Leipzig. Engelmann. BROWNING'S NEW POCKET MICROSCOPE. THE BEST COMPANION FOR THE SEASIDE. The Instrument complete, with good objective, and large field eye-piece, in morocco case, £1 11s. 6d., or with two objectives, 1 in. and 2 in. dipping-tube, forceps, glass plate, &c., £2 2s. JOHN BROWNING, OPTICAL AND PHYSICAL INSTRUMENT MAKER TO THE ROYAL OBSERVATORY, ETC., ETC., 111, MINORIES, E. Prize Medal, 1862. Established 100 years. THE POPULAR SCIENCE REVIEW, No. XXXV., APRIL, 1870, price 2s. 6d., contains: THE STRUCTURE OF ROCK MASSES. By David Forbes, F.R.S., &c. Illustrated. MICROSCOPIC TEST OBJECTS UNDER PARALLEL LIGHT AND CORRECTED POWERS. By Rev. WHAT IS WINE? By August Dupré, Ph.D. THE FERTILIZATION OF VARIOUS FLOWERS BY INSECTS. By William Ogle, M.D., Oxon. Illustrated. THE TURRET-SHIPS MONARCH' AND CAPTAIN.' By S. J. Mackie, F.G.S. Illustrated. REVIEWS OF BOOKS, Summary of Scientific Progress, &c. HARDWICKE'S SCIENCE GOSSIP, LONDON: ROBERT HARDWICKE, 192, PICCADILLY, W. b Volume I. 392 pages, 17 whole-page Plates. Price 10s. 6d. THE MONTHLY MICROSOCPICAL JOURNAL: TRANSACTIONS OF THE ROYAL MICROSCOPICAL SOCIETY, AND RECORD OF HISTOLOGICAL RESEARCH. EDITED BY HENRY LAWSON, M.D., F.R.M.S., Assistant-Physician to, and Lecturer on Histology in, St. Mary's Hospital. THE PRESIDENT'S ADDRESS TO THE ROYAL MICRO THE COMPOSITE STRUCTURE OF SIMPLE LEAVES. A MODIFICATION OF THE BINOCULAR MICROSCOPE. HELIOSTAT FOR PHOTO-MICROGRAPHY. By Lieut. Colonel J. J. Woodward, M.D. U.S. Army Medical THE VITAL FUNCTIONS OF THE DEEP-SEA PROTOZOA. CRUSTACEA. By M. Van Beneden, Brussels. SOME UNDESCRIBED RHIZOPODS FROM NORTH AT- ON THE ORGAN OF HEARING IN MOLLUSKS. By By J. G. Tatem, F.L.S. THE CONSTRUCTION OF OBJECT-GLASSES FOR THE ON TRIARTHRA LONGISETA. By C. T. Hudson, LL.D. PROFESSOR OWEN'S VIEWS ON MAGNETIC AND VITAL FORCES. By Lionel S. Beale, M.B., F.R.S. SCALE-BEARING PODURA. By S. J. McIntyre, F.R.M.S. TWO NEW FORMS OF SELENITE STAGES. By Frederick RESEARCHES ON THE CONSTITUTION AND DEVELOP- ON THE SIMPLE STRUCTURE OF COMPOUND LEAVES. MARKINGS ON THE PLEUROSIGMA ANGULATUM AND Sanders, M.R.C.S., F.R.M.S. By Alfred PROTOPLASM AND LIVING MATTER. By Dr. Lionel ON SOME NEW INFUSORIA FROM THE VICTORIA THE MICROSCOPE IN SILKWORM ON THE CONSTRUCTION of OBJECT-GLASSES FOR THE IVERSAL MOUNTING AND DISSECTING ON CRYSTALS ENCLOSED IN BLOW-PIPE BEADS. By NEW BOOKS, WITH SHORT NOTICES. ON THE MICROSCOPICAL STRUCTURE OF SOME PRECIOUS RED BLOOD CORPUSCLE OF OVIPAROUS LEPISMA SACCHARINA, By J. B. Dancer, F.R.A.S. ON THE CONSTRUCTION OF OBJECT-GLASSES FOR THE PARKERIA AND LOFTUSIA. By Dr. Carpenter, V.P.R.S., CULTIVATION. By M. Cornalia. ON FREE-SWIMMING AMERÆ. By J. G. Tatem, Esq. NOTE ON THE BLOOD-VESSEL-SYSTEM OF THE RETINA PROCEEDINGS OF SOCIETIES. The Monthly Microscopical Journal' can be obtained through any Bookseller or Optician, price 18. 6d. per month; or it will be sent post-free for one year on the following terms:In any part of the United Kingdom 18s. Germany, Italy, Spain, or United States British Colonies, Belgium, France, or Holland.... 20s. | Denmark, Russia, or Sweden 218. ...... 248. LONDON: ROBERT HARDWICKE, 192, PICCADILLY, W. THE MONTHLY MICROSCOPICAL JOURNAL: VOLUME II. 344 Pages of Letterpress, 19 whole-page Plates, price 10s. 6d., contains :— ON THE RECTAL PAPILLE OF THE FLY. By B. T. ON THE DIATOM PRISM, AND THE TRUE FORM OF OBSERVATIONS ON THE RECENT INVESTIGATIONS INTO ON THE CORRELATION OF MICROSCOPIC PHYSIOLOGY NOTES ON HYDATINA SENTA. By C, T. Hudson, LL.D. SOME REMARKS ON THE STRUCTURE OF DIATOMS AND STRUCTURE OF THE ADULT HUMAN VITREOUS HUMOUR. ON THE USE OF THE CHLORIDE of Gold in MICROSCOPY. By Thomas Dwight, jun., M.D. ON A SIMPLE FORM OF MICRO-SPECTROSCOPE. By ON THE STRUCTURE AND AFFINITIES OF SOME EXO- MICROSPECTROSCOPY. RESULTS OF SPECTRUM ANALYSIS. OBSERVATIONS ON MUCOR MUCEDO. By R. L. Maddox, ON THE STRUCTURE OF THE STEMS OF THE ARBO- ON THE DEVELOPMENT OF THE OVUM OF THE PIKE. ON THE STRUCTURE OF THE STEMS OF THE ARBO- EXPERIMENTS ON SPONTANEOUS GENERATION. By FURTHER REMARKS ON THE NINETEEN-BAND TEST- ON HIGH-POWER DEFINITION, WITH ILLUSTRATIVE ON METHODS OF MICROSCOPICAL RESEARCH. By Herr ON THE CONSTRUCTION OF OBJECT-GLASSES FOR THE JOTTINGS FROM THE NOTE-BOOK OF A STUDENT OF A SUPPOSED MAMMALIAN TOOTH FROM THE COAL- ON HOLTENIA, A GENUS OF VITREOUS SPONGES. By ON THE DETECTION BY THE MICROSCOPE OF RED ON THE STAINING OF MICROSCOPICAL PREPARATIONS. SOME FURTHER REMARKS ON AN ILLUMINATION FOR ON THE RHIZOPODAL FAUNA OF THE DEEP SEA. By ON THE PRESENCE OF FORAMINIFERA IN MINERAL ON THE RELATIONS OF THE CILIARY MUSCLE TO THE THE HISTOLOGY OF THE EYE. By John Whitaker ON COLLECTING AND MOUNTING ENTOMOSTRACA. By MY EXPERIENCE IN THE USE OF MICROSCOPES. By FURTHER REMARKS ON THE PLUMULES OF BATTLE- THE DEVELOPMENT OF ORGANISMS IN ORGANIC INFUSIONS. By C. T. Staniland Wake, F.A.L.S. The "Monthly Microscopical Journal" can be obtained through any Bookseller or Optician, price 1s. 6d. per month, or it will be sent post-free for one year on the following terms :— In any part of the United Kingdom.. ...... 188. British Colonies, Belgium, France, or Holland.... 20s. 218. Germany, Italy, Spain, or United States.. ....... 248. All Communications, Advertisements, &c., to be sent to the Publisher. LONDON: ROBERT HARDWICKE, 192, PICCADILLY. |