_Are you thinking of Engaging a Popular Lecturer?_ If so, here are two good reasons why you should consider MR. R. KEARTON’S claims:-- 1. He possesses Five of the finest Sets of Lantern Slides in the world, all made from Photographs taken direct from Nature by his brother Mr. Cherry Kearton and himself. 2. He knows his subject thoroughly, uses no notes of any kind to speak from, is scientifically accurate, instructive, original, popular, and amusing. “Especially interesting.”--_The Times._ “Intensely interesting.”--_Morning Post._ Prof. ARTHUR THOMSON, Aberdeen:--“A fascinating, stimulating, and instructive lecture.” _Write for a Prospectus containing all particulars to the Manager of_ =THE LECTURE AGENCY, Limited, The Outer Temple, LONDON, W.C.= [Illustration: THORNTON-PICKARD “IMPERIAL PERFECTA” Fitted with Three Racks and Pinions. Extension, Half-plate, 22 inches.] =THE PICTURES IN THIS BOOK= _were taken with, and amply prove the suitability of_ THORNTON-PICKARD =CAMERAS & SHUTTERS= FOR NATURAL HISTORY WORK. “IMPERIAL PERFECTA.” A New and Perfected Triple Extension Camera at a Low Price. _SPECIAL ADVANTAGES_:-- Extra Wide front and Bellows. Independent Rising Front at shortest focus. FOCUSSING CAMERA BODY with Extra Rack and Pinion. _SPECIFICATION_: Triple Extension Camera with Brass Turntable, 3-fold Ash Stand, Time and Instantaneous Shutter with Speed Indicator, Double Book-form Dark Slide, T.P. Beck Symmetrical Lens with Iris Diaphragm F 8. =PRICE= =½-pl. ... £4 4 0 1-pl. ... £6 6 0= =IMPERIAL FOCAL PLANE TWO-SHUTTER OUTFIT.= =An Ordinary Stand Camera= for General Work. =A Focal Plane Camera= for High-Speed Photography. =A Triple Extension Camera= for long-focus Views, Copying, Enlarging, and Telephotography. =A Camera with Two Shutters=, giving:--Time Exposures, Instantaneous Exposures from 1/15 to 1/90 sec. Focal Plane Exposures from 1/100 to 1/500 =COMPLETE OUTFIT=, ½-Plate Size, comprising Camera, 2 Shutters, Stand, Slide, and Beck Lens. =Price £4 15 0= =Complete Catalogue post free. THORNTON-PICKARD CO., LTD., ALTRINCHAM.= =NATURAL HISTORY WORKS= BY =R. KEARTON, F.Z.S.= With Illustrations from Photographs taken direct from Nature by CHERRY and RICHARD KEARTON. =British Birds’ Nests.= New and Enlarged Edition. With 1 Rembrandt and 17 Coloured Plates, and Illustrations from Photographs taken direct from Nature by CHERRY KEARTON. Cloth gilt, =21s.= net.