MARKINGS, FOOTPRINTS AND FUCOIDS.
Reading edition
DEDICATED TO THE MEMORY OF THE LATE DR. J. J. BIGSBY, F.R.S., OF LONDON, The painstaking and accurate Author of the Thesaurus Siluricus and Devonico-Carboniferous, a warm and kind Friend and Christian Gentleman and one of the Pioneers of Canadian Geology.
Reminiscences of Lyell's Work—Tidal Flats of the Bay of Fundy—Rill Marks and Shrinkage Cracks—Worm Trails and Burrows—The Paces of Limulus—Fucoids Versus Trails—Footprints of Vertebrates

Track of Limulus.—Modern, Orchard Beach. Showing its resemblance to the Protichnites of the Cambrian. (Page 320.)