rations. Third Edition, revised.
2_s._ 6_d._

=The Splash of a Drop.= By Professor A. M. WORTHINGTON, F.R.S. With
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NATURAL HISTORY RAMBLES.

_Fcap. 8vo., with numerous Woodcuts, Cloth boards, 2s. 6d. each._

=IN SEARCH OF MINERALS.=
By the late D. T. ANSTEAD, M.A., F.R.S.

=LAKES AND RIVERS.=
By C. O. GROOM NAPIER, F.G.S.

=LANE AND FIELD.=
By the late Rev. J. G. WOOD, M.A., Author of "Man and his
Handiwork," &c.

=MOUNTAIN AND MOOR.=
By J. E. TAYLOR, F.L.S., F.G.S., Editor of "Science-Gossip."

=PONDS AND DITCHES.=
By M. C. COOKE, M.A., LL.D.

=THE SEA-SHORE.=
By Professor P. MARTIN DUNCAN, M.B. (London), F.R.S.

=THE WOODLANDS.=
By M. C. COOKE, M.A., LL.D., Author of "Freaks and Marvels
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=UNDERGROUND.=
By J. E. TAYLOR, F.L.S., F.G.S.

=HEROES OF SCIENCE.=

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=ASTRONOMERS.= By E. J. C. MORTON, B.A. With numerous diagrams.

=BOTANISTS, ZOOLOGISTS, AND GEOLOGISTS.= By Professor P. MARTIN DUNCAN,
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=CHEMISTS.= By M. M. PATTISON MUIR, Esq., F.R.S.E. With several diagrams.

=MECHANICIANS.= By T. C. LEWIS, M.A.

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MANUALS OF HEALTH.

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=HEALTH AND OCCUPATION.= By the late Sir B. W. RICHARDSON, F.R.S., M.D.

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=NOTES ON THE VENTILATION AND WARMING OF HOUSES, CHURCHES, SCHOOLS, AND
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=ON PERSONAL CARE OF HEALTH.= By the late E. A. PARKES, M.D., F.R.S.

=AIR, WATER, AND DISINFECTANTS.= By C. H. AIKMAN, M.A., D.Sc., F.R.S.E.

MANUALS OF ELEMENTARY SCIENCE.

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=PHYSIOLOGY.= By Professor A. MACALISTER, LL.D., M.D., F.R.S., F.S.A.

=GEOLOGY.= By the Rev. T. G. BONNEY, M.A., F.G.S.

=ASTRONOMY.= By W. H. CHRISTIE, M.A., F.R.S.

=BOTANY.= By the late Professor ROBERT BENTLEY.

=ZOOLOGY.= By ALFRED NEWTON, M.A., F.R.S., Professor of Zoology in the
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=MATTER AND MOTION.= By the late J. CLERK MAXWELL, M.A., Trinity College,
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=SPECTROSCOPE (THE), AND ITS WORK.= By the late RICHARD A. PROCTOR.

=CRYSTALLOGRAPHY.= By HENRY PALIN GURNEY, M.A., Clare College, Cambridge.

=ELECTRICITY.= By the late Prof. FLEEMING JENKIN.

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