May I, 1879] 



NATURE 



DIARY OF SOCIETIES. 



London 



THURSDAY. May i. 



Royal Socikty, at 8.30.— A Magnetic Survey of the Fortieth Parallel in 

 North America between the Atlantic Ocean and the Great Salt Lake, Utah; 

 Prof. Thorpe.— On Certain Definite Integrals occurring in Spherical Har- 

 monic Analysis, and ' n the Expansion in Series of the Potentials of the 

 Ellips'.id and the Ellipse: W. O. Niven. — On the Origin of the Parallel 

 Roads of L'.chaber. and their Bearing on other Phenomena of the Glacial 

 Period ; Prof. Prestwich. 



Chemical Socihtv, at 8.— On the Volumes of Liquids at their Boiling Points 

 obtainable from Unit Volumes of Gases : Dr. W. Ramsay. — On a Method 

 of Precipitating Manganese entirely as Dio.icide, and its Application to the 

 Volumetric Determination of Manganese: S. Pattinson. — On the Deter- 

 mination of Nitric Acid as Nitric Oxide by Means of its Action on Mer- 

 cury ; R. Warrington. 



Royal iNSTirtrrioN, at 2.— Annua! Meeting. 



LlNNEAN Society, at 8.— Note on the Occurrence of a Restiaceous Plant in 

 Cochin China: Dr. Maxwell Masters. — On the Structure of the Pouched 

 Rats of the Genus Heieromys : Dr. J. Murie. — Nutrition in its Relation 

 to the Fertilisation of Floweri : Thos. Meehan. 



FRIDAY, May 2. 

 I» RoYALlMSTiTtrriON, atp.— Actionof Anasthetics: Prof. McKendrick. 

 SociETYoi' Arts, at 8.— The Wild Silks of India: Thos Wardle. 

 Geologists' Association, at 8.— The Dinosauria: Prof. Seeley. 



SATURDAY, May 3. 

 Royal Ihstitdtion, at 3.— Architecture : H. H. Statham. 



MONDAY, May 5. 

 Geologists' Association. — Excursion to Newbury. 

 Medical Society, at 8.30. 



ViCTOSIA lNSTITt;TE, at'S. 



Society ar Arts, at 8.— Recent Advances in Telegraphy : W. H. Preece. 

 Royal Institltion, at 5.— General Monthly Meeting. 

 Odontological .Society.— Action of Nicotine on the Teeth. ' 



TUESDAY, May 6. 



Zoological Society, at 8.30.— On Additions to the Menagerie : The Secre- 

 tary.— Description of a New Species of Woodpecker, from the Island of 

 Tynts Sima, near Japan : Rev. H. B. Tristram. — Descriptions of New 

 Genera and Species of Asiatic Lepidoptera Heterocera : F. Moore. F.Z.S. 



Statistical Society, at 7.45. — The Feasibility of Compulsory Education 

 in Ireland: W. Neilsoa Hancock, LL.D. 



Royal Institution, at 3. — Schumann : Ernest Pauer. 



WEDNESDAY, May 7. 

 Society of Akts, at 8.— The Government Patent Bill : W. L. Wise, 

 Ento.mological Society, at 7, 



THURSDAY, May 8. 



Royal SociETT, at &30. — On the Sensitive State of Electrical Discharges 

 through Rarefied Gases : W. Spottiswoode and J. F. Moulton.— On the 

 Action of Solid Nuclei : C. Tomlinson.— On the Results of the Magnetical 

 Observations made by the Officers of the Arctic Expedition, 1875-76: Staff- 

 Commander E. W. Creakc.— On the Relation between the Diurnal Range 

 of Magnetic Declination and Horizontal Force as observed at the Royal 

 Observatory, Greenwich, during the Years 1841 10 1877, and the Period of 

 Solar Spot Frequency ; W. Ellis. ' 



Mathematical Society, at 8. — On the Complex whose Lines join Conju- 

 g.ite Points of Two Correlative Planes: Dr. Hirst, F.R.S.— Note on a 

 (ieometrical Theorem connected with the Function of an Imaginary 

 Variable: Prof. Cayley, F.R.S.— Notes on some Definite Integrals: The 

 Late Prof. Clifford, F.R.S. ; and a Paper by E. J. Routh, F.R.S. 



Society of Arts, at 8.— Alizarine and Allied Colouring Matters : W. H. 

 Perkin. 



Royal Institution, at 3.— Dissociation : Prof. Dewai. 



FRIDAY, May 9. 

 Royal iHSTrruTiOK, at 9.— Habits of Ai:ts : Sir John Lubbock. 



SATURDAY, May la 

 Physical Society, at 3. 



Geologists' Associati-jn. — Excursion to Orpington and Knockholt. 

 ftoVAL Institution, at 3.- Architecture: H. H. Statham. 



MICROSCOPES, OBJECTIVES, &c. 



CENTENNIAL EXHIBITION, PHILADELPHIA, U.S.A. 



The Medal and Highest Award has been given for Design, 

 Construction, Optical Excellence, and Moderation in Price, to 



HENRY CROUCH, 



66, BARBICAN, LONDON, E.G. 



Folly Illustnted Caulogne 9nd fiill Instnictioas by Post, 6 Si 

 Mailed abroad free. 



HORNE'S POMPKIAN DECORATIONS. 



ROBERT HORNE, 



HOUSE DECORATOR and PAPER-HANGING 



MANUFACTURER, 



41, GRACECHURCII STREET, LONDON, E.C. 



By Special Appotntmcnt to Hii M^ut; the King %f Italy. 



DIAGRAMS OF NATURAL HISTORY. 



The^e Diagrams, compiled by the eminent Scientific Men whose names are 

 appended, are drawn with the strictest regard to Nature, and engraved in the 

 best style of Art. The scries consists of Kleven subjects, each arranged so 

 that it niay be mounted in one sheet, or be divided into four sections and 

 folded in the form of a book, thus rendering them available either for Class 

 Exercises or Individual Study. 



Price of each, Mounted on Roller and varnished, Cj. ; or folded In 

 book form, 4J. 



I. CHARACTERISTIC BRITISH 



FOSSILS. By J. W. LOWRY, F.R.G.S. 

 Exhibits nearly 600 of the more prominent forms of Organic Re- 

 mains found in British Strata, arranged in the order of their occur- 

 rence, and accompanied by a column showing the succession and 

 thickness of the Strata, and the mineral character of each formation, 



II. CHARACTERISTIC BRITISH 



TERTIARY FOSSILS. By J. W. LOWRY. F.R.G.S. 

 This Diagram is similarly arranged to No. i, and illustrates 

 upwards of 800 Specimens of the Tertiary Formaiion, indicating the 

 local series to which they belong, the formation in which they exist, 

 the proportions of the engravings to the natural sixe, and whether 

 still found living. 



III, FOSSIL CRUSTACEA. By J; W. 



SALTER, A.L.S., F.G.S., and H. WOODWARD, F.G.S., 

 F.Z.S. 



Consisting of about 500 Illustrations of the Orders and Sub- 

 Orders, and showing their range in Geological Time. Some recent 

 types are introduced, and the Natural History succession is 

 observed as nearly as possible. 



IV. The VEGETABLE KINGDOM. By 



A. HENFREY. 



Arranged according to the Natural System, each Order being illus- 

 trated by numerous Examples of Representative Species showing the 

 habits of the Plants, as well as dissections of the Flowers and Fruits. 



V. The ORDERS and FAMILIES of 



MOLLUSCA. By Dr. WOODWARD. 

 Represented in Six Classes: — Cephalapoda, consisting of two 

 Orders divided into six Families, and illustrated by 20 Examples — 

 Gasteropoda, four Orders divided into 31 Families, supplemented by 

 three Sub-Orders, and illustrated by 180 Examples — Pteropoda, 

 illustrated by 18 Examples — Conchifera, divided into 20 Families, 

 illustrated by 58 Examples — Brachiopoda, illustrated by 1 1 Examples 

 — and Tunicata, illustrated by 20 Examples. 



VI. MYRIAPODA — ARACHNIDA — 



CRUSTACEA — ANNELIDA — and ENTOZOA. By 

 ADAM WHITE and Dr. BAIRD. 



The numerous Tribes represented under these Orders are illus- 

 trated by upwards of 180 Examples, including Centipedes, Spiders, 

 Crabs, Sandhoppers, Seamice, Serpulas, Leeches, &c., the various 

 Families and Sections being carefully distinguished. 



VII. INSECTS. By Adam White. 



Contains nearly 250 Drawings of the different Orders : — Colcop- 

 tera — the Beetle Tribe ; Euplexoptera — Earwigs, &c. ; Orthoptera 

 —Crickets, &c. ; Thysanoptera — Thripidae, &c. ; Ncuroptera— 

 Mayfly, &c. ; Trichoptera — Caddis-fly, &c. ; Hymenoptera— Bees, 

 &c. ; Strepsiptera — Hylecthrus rubis ; Lepidoptera — Moth Tribes ; 

 Butterflies ; Homoptera— including the most anomalous forms of 

 Insects ; Heteroptera — Bugs, &c. ; Diptera— Flies, Gnats, &c. ; and 

 Aphaniptera— Fleas, &c. 



VIII. FISHES. By P. H. Gosse. 



Showing over \y> of the most conspicuous Types, arranged in 

 th«r Orders and Families. Illustrations are given of iheAcanthop- 

 terygii, consisting of 17 Families. The Malacopterygii. represented 

 in 12 Families; the Plectognathi, in a Families; and the Cartil- 

 aginii, in 5 Families. 



IX. REPTILIA and AMPHIBIA. By 



Drs. BELL and BAIRD. 

 Contains 105 Figures of the principal Typical Forms, namely:— 

 Chel' nia — ^Turtles. &c. , 2 1 Species ; Loricata — Crocodiles, 3 Species ; 

 Amphisbenia, 2 Species ; Saurta — I^izards, &c., 29 Species ; Ophidia 

 — Snakes, &c., 24 Species ; and Amphibia— Frogs, &c., 26 Species. 



X. BIRDS. By George Gray. 



Contains Drawings of 236 of the leading Illustrative Specimens, 

 namely : — Accipitres — Eagles, &c., 15 Species ; Passeres— Swallows, 

 &c, 33 Species, and Flycatchers, 52 Species; Scansores — Parrots, 

 &c., 17 Species; Columbac— Doves, &c., 5 Species; Gallinac— 

 Fowls, &c., 17 Species; Siruthiones— Ostriches, &c. , 3 Species; 

 Grail ac— Plovers, &c., 21 Species; and Anscret— Ducks, &c., %% 

 Species. 



XI. MAMMALIA. By Dr. Baird. 



Exhibits 145 of the chief Illustrations selected from the several 

 Orders : — Quadrumana — Apes, &c. , k> Species ; Cheiroptera— Rats, 

 &c., 7 Species, Carnaria— Kelid* — Lions, &c., 7 Species: Viver- 

 ridse— Civets, &c , 5 Species; Canida:— Do|}S, &c., 8 Species; 

 Mustelida;— Weasels, &c., 6 Specie.; Talpidx— Moles, &c., 9 

 Species; Ursidsc— Bears, &c. , 9 Sjecies ; Macropidx— Kancaroos, 

 &c., 5 Species; Phocidae— Seals, &c., 5 Species; Cet.icca— Whales, 

 &c., 8 Species; Rodentia— Rats, &c., 16 Species; Ruminantia— 

 Bovida;— Oxen, &c , 15 Species; Cervinae-Deer, 8 Species; 

 Equidx— Horses, &c., 3 Species; Pachyderraate— Elephants, &«., 

 9 Species; and Edentata — Armadillos, &c., 8 Species. 

 London: EDWARD STANFORD, 55 Charing Cross, S.W. 



