30 MESSRS. LONGMANS & CO.'S STANDARD AND GENERAL WORKS. 



Popular Science (Natural History, &e.). 

 Fwrneaux (W.). Hudson (W. H.). 



THE OUTDOOR WORLD; or The 

 Young Collector's Handbook. With 18 

 Plates (16 of which are coloured), and 549 

 Illustrations in the Text. Crown 8vo., 

 gilt edges, 6s. net. 



BUTTERFLIES AND MOTHS (British). 

 With 12 coloured Plates and 241 Illus- 

 trations in the Text. Crown 8vo., gilt 

 edges, 6s. net. 



LIFE IN PONDS AND STREAMS, 

 With 8 coloured Plates and 331 Illustra- 

 tions in the Text. Crown 8vo., gilt 

 edges, 6s. net. 



Hartwig (GEORGE). 



THE SEA AND ITS LIVING WONDERS. 

 With 12 Plates and 303 Woodcuts. 8vo., 

 gilt top, 75. net. 



THE TROPICAL WORLD. With 8 

 Plates and 172 Woodcuts. 8vo., gilt 

 top, 75. net. 



THE POLAR WORLD. With 3 Maps, 

 8 Plates and 85 Woodcuts. 8vo., gilt 

 top, 75. net. 



THE SUBTERRANEAN WORLD. With 

 3 Maps and 80 Woodcuts. 8vo., gilt 

 top, 71. net. 



Helmholtz. POPULAR LECTURES ON 

 SCIENTIFIC SUBJECTS. By HERMANN VON 

 HELMHOLTZ. With 68 Woodcuts. 2 vols. 

 Cr. 8vo., 35. 6d. each. 



Hoffmann. ALPINE FLORA : For 



Tourists and Amateur Botanists. With 

 Text descriptive of the most widely dis- 

 tributed and attractive Alpine Plants. By 

 JULIUS HOFFMANN. Translated by E. S. 

 BARTON (Mrs. A. GEPP). With 40 Plates 

 containing 250 Coloured Figures from 

 Water-Colour Sketches by HERMANN 

 8vo., ^s. 6d. net. 



HAMPSHIRE DAYS. With n Plates 

 and 36 Illustrations in the Text from 

 Drawings by BRYAN HOOK, etc. 8vo., 

 i os. 6d. net. 



BIRDS AND MAN. 

 8vo., 6s. net. 



Large crown 



NATURE IN DOWNLAND. With 12 

 Plates and 14 Illustrations in the Text by 

 A. D. McCoRMicK. 8vo., IDS. 6d. net. 



BRITISH BIRDS. With a Chapter 

 on Structure and Classification by FRANK 

 E. BEDDARD, F.R.S. With 16 Plates (8 

 of which are Coloured), and over 100 Illus- 

 trations in the Text. Crown 8vo., gilt 

 edges, 6s. net. 



Millais. THE NATURAL HISTORY OF 

 THE BRITISH SURFACE FEEDING-DUCKS. 

 By JOHN GUILLE MILLAIS, F.Z.S., etc. 

 With 6 Photogravures and 66 Plates (41 in 

 Colours) from Drawings by the Author, 

 ARCHIBALD THORBURN, and from Photo- 

 graphs. Royal 4to., 6 6s. 



Proctor (RICHARD A.). 



LIGHT SCIENCE FOR LEISURE HOURS. 

 Familiar Essays on Scientific Subjects. 

 Crown 8vo., ^s. 6d. 



ROUGH WA YS MADE SMOOTH. Fami- 

 liar Essays on Scientific Subjects. Crown 

 8vo., 3s. 6d. 



PLEA SA NT WA YS IN SCIENCE. C rown 

 8vo., 3S. 6d. 



NA TURE STUDIES. By R. A. PROC- 

 TOR, GRANT ALLEN, A. WILSON, T. 

 FOSTER and E. CLODD. Cr. 8vo., 35. 6d. 



LEISURE READINGS. By R. A. PROC- 

 TOR, E. CLODD, A. WILSON, T. FOSTER 

 and A. C. RANYARD. Cr. 8vo. , 3s. 6d. 



** For Mr. Proctor's other books see pp. 16 

 and 35, and Messrs. Longmans & Co.'s Cata- 

 logue of Scientific Works, 



