STUDENTS IN MATHEMATICS, CLASSICS, SCIENCE, AND MEDICINE.-A large stock of New and Secondhand Books may be inspected and purchased at greatly reduced prices. Catalogue preparing.

LEWIS'S MEDICAL and SCIENTIFIC LIBRARY includes the Books required for the London University Examinations. Prospectus on application.

London: H. K. LEWIS, 136, Gower Street, W.C.

JOURNAL OF MICROSCOPICAL SCIENCE.

Edited by DR. LANKESTER, F.R.S., and PROFESSOR BUSK, F.R.S.

Contents of No. XXX. New Series, price 4s. :—

On a Microscopic Ferment found in Red French Wine. By HENRY J. SLACK, F.G.S. Bivalved Entomostraca, Recent and Fossil. By Professor T. RUPERT Jones, F.G.S. Royal Microscopical Society; Report on the Microscopes and Cabinet of Objects; Auditors' Report; The President's Address.

Observations on the Microscopic Alga which causes the Discoloration of the Sea in various parts of the World. By Dr. C. COLLINGWOOD, M.A., F.R.S.

On New Species of Diatomaceæ, being a Reply to Mr. Kitton's Remarks. By the Rev. E. O'MEARA.

On certain Butterfly Scales Characteristic of Sex. By T. W. WONFOR, Hon. Sec. to the Brighton and Sussex Nat. Hist. Soc.

Reviews:-Quarterly Chronicle of Microscopical Science-Notes and Correspondence— Proceedings of Societies.

JOHN CHURCHILL and SONS, New Burlington Street.

BY ROBERT GALLOWAY,

Professor of Applied Chemistry, Royal College of Science for Ireland.

THE FIRST STEP IN CHEMISTRY.

Fourth Edition, with Engravings, fcap. 8vo, cloth, 6s. 6d.

Chap. 1. Elements and Compounds.

2. The Conditions necessary for CombinationExercises In what way Combination reaches its Limit.

3. Properties of Matter.

4. Laws of Combination.

5. Chemical Notation and Nomenclature.
6. On the Decomposition of Substances-Single
and Double Elective Affinity-Exercises.
7. Influence which Heat exercises over Affinity.
8. Influence which Cohesion and Elasticity ex-
ercise over Affinity.

9. Practical Application of above Principles. 10. Influence of Mass in the Formation of Chemical Compounds.

11. Influence which Light exercises over Affinity. 12. Static and Dynamic Electricity.

13. The Inducing Action which some Substances possess at the Moment of Chemical Change.

14. Isomeric Compounds.

15. Metallic Oxides.

16. Acid Substances.

17. Salts.

JOHN CHURCHILL and SONS, New Burlington Street.

The London Student Advertiser.

L. REEVE & CO.'S

LIST OF

NEW ILLUSTRATED STANDARD & POPULAR WORKS
IN NATURAL HISTORY, &c.

BOTANY.

BOTANICAL MAGAZINE. Figures and Descriptions of New and Rare Plants. By
Dr. J. D. HOOKER, F.R.S. Royal 8vo. Published Monthly, with 6 Coloured Plates, 3s. 6d.

FLORAL MAGAZINE. Figures and Descriptions of New Popular Garden Flowers. By
the Rev. H. HONY WOOD DOMBRAIN, A.B. Imperial 8vo. Published Monthly, with 4 Coloured Plates,
2s. 6d.

BRITISH WILD FLOWERS, Familiarly Described in the Four Seasons. By T. MOORE,
F.L.S. Twenty-four Coloured Plates, 16s.

THE ILLUSTRATED BRITISH FLORA.

A Description (with a Wood Engraving, including dissections, of each species) of the Flowering Plants and Ferns indigenous to, or naturalized in, the British Isles. By G. BENTHAM, F.R.S. Two vols., 1295 Wood Engravings, £3 10s. HANDBOOK OF THE BRITISH FLORA. By G. BENTHAM, F.R.S. New Edition, 12s. OUTLINES OF ELEMENTARY BOTANY, as Introductory to Local Floras.

BENTHAM, F.R.S. 2s. 6d.

THE LAWS OF BOTANICAL NOMENCLATURE. 29. 6d.

By G.

By ALPHONSE DE CANDOLLE.

BRITISH GRASSES. By M. PLUES.
gravings, 10s. 6d.
BRITISH FERNS. An Introduction to the Study of the FERNS, LYCOPODS, and EQUISETA
indigenous to the British Isles. With Chapters on the Structure, Propagation, Cultivation, Diseases,
Uses, Preservation, and Distribution of Ferns. By M. PLUES. Crown 8vo, 16 Coloured Plates, and 55
Wood Engravings, 10s. 6d.

Sixteen Coloured Plates, and 100 Wood En

THE BRITISH FERNS. By Sir W. J. HOOKER, F.R.S.

£2 2s.

Royal 8vo, 66 Coloured Plates,

GARDEN FERNS. A Selection of Exotic Ferns, adapted for Cultivation in the Garden,
Hothouse, and Conservatory. By Sir W. J. HOOKER, F.R.S. Royal 8vo, 64 Coloured Plates, £2 2s.
FILICES EXOTICE. Coloured Figures and Description of Exotic Ferns. By Sir W. J.
HOOKER, F.R.S. Royal 4to, 100 Coloured Plates, £6 11s.

BRITISH MOSSES. By the Rev. M. J. BERKELEY, M.A., F.L.S. Twenty-four Coloured
Plates, 21s.

BRITISH FUNGOLOGY. By the Rev. M. J. BERKELEY, M.A., F.L.S. Twenty-four
Coloured Plates, 30s.

THE ESCULENT FUNGUSES OF ENGLAND. Containing an Account of their
Classical History, Uses, Character, Development, Structure, Nutritious Properties, Modes of Cooking and
Preserving, &c. By C. D. BADHAM, M.D. New Edition. Edited by F. CURREY, F.R.S. Twelve
coloured Plates, 12s.
BRITISH MYCOLOGY, comprising Figures and Descriptions of the Funguses of interest
and novelty indigenous to Britain. By Messrs. T. J. HUSSEY. Royal 4to. First Series, 90 Coloured
Plates, £7 12s. 6d. ; Second Series, 50 Coloured Plates, £4 10s.

BRITISH SEAWEEDS. By S. O. GRAY. Crown 8vo, 16 Coloured Plates, 10s. 6d.
PHYCOLOGIA BRITANNICA ; or History of British Seaweeds. By Dr. W. H. HARVEY,
F.R.S. Royal 8vo, 4 vols., 360 Coloured Plates, £6 6s.

PHYCOLOGIA AUSTRALICA. A History of Australian Seaweeds. By Dr. HARVEY,
F.R.S. Royal 8vo, 5 vols., 300 Coloured Plates, £7 13s.

L. REEVE & CO., 5, HENRIETTA STREET, COVENT GARDEN.

α