=THE STEAM ENGINE.= By Prof. Jamieson. Eleventh Edition, 3/6 =METALLURGY.= By Prof. Humboldt Sexton, Glasgow and West of Scotland Technical College. Third Edition, Revised, 6/ =PHYSICS.= A TEXT-BOOK OF PHYSICS: By J. H. Poynting, Sc.D., F.R.S., and J. J. Thomson, M.A., F.R.S. Vol. I.--Properties of Matter. Third Edition, 10/6 Vol. II.--Sound. Third Edition, 8/6 Vol. III.--Heat. Second Edition, 15/ =PHOTOGRAPHY.= By A. Brothers, F.R.A.S. Second Edition, 21/ LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND. * * * * * “Boys COULD NOT HAVE A MORE ALLURING INTRODUCTION to scientific pursuits than these charming-looking volumes.”--Letter to the Publishers from the Headmaster of one of our great Public Schools. Handsome Cloth, 7s. 6d. Gilt, for Presentation, 8s. 6d. OPEN-AIR STUDIES IN BOTANY: =SKETCHES OF BRITISH WILD FLOWERS IN THEIR HOMES.= BY R. LLOYD PRAEGER, B.A., M.R.I.A. =Illustrated by Drawings from Nature by S. Rosamond Praeger, and Photographs by R. Welch.= General Contents.--A Daisy-Starred Pasture--Under the Hawthorns--By the River--Along the Shingle--A Fragrant Hedgerow--A Connemara Bog--Where the Samphire grows--A Flowery Meadow--Among the Corn (a Study in Weeds)--In the Home of the Alpines--A City Rubbish-Heap--Glossary. “A FRESH AND STIMULATING book ... should take a high place ... The Illustrations are drawn with much skill.”--_The Times._ “BEAUTIFULLY ILLUSTRATED ... One of the MOST ACCURATE as well as INTERESTING books of the kind we have seen.”--_Athenæum._ “Redolent with the scent of woodland and meadow.”--_The Standard._ * * * * * _With 12 Full-Page Illustrations from Photographs. Cloth. Second Edition, Revised. 8s. 6d._ OPEN-AIR STUDIES IN GEOLOGY: =An Introduction to Geology Out-of-doors.= By GRENVILLE A. J. COLE, F.G.S., M.R.I.A., Professor of Geology in the Royal College of Science for Ireland, and Examiner in the University of London. General Contents.--The Materials of the Earth--A Mountain Hollow--Down the Valley--Along the Shore--Across the Plains--Dead Volcanoes--A Granite Highland--The Annals of the Earth--The Surrey Hills--The Folds of the Mountains. “The FASCINATING ‘Open-air Studies’ of Prof. Cole give the subject a GLOW OF ANIMATION ... cannot fail to arouse keen interest in geology.”--_Geological Magazine._ “A CHARMING BOOK, beautifully illustrated.”--_Athenæum._ * * * * *