A guide to the identification of the trees of the United States, with three hundred and forty illustrations, more than half of them from photographs. The book is the work of one who is a tree-lover as well as a botanist, and besides being scientifically accurate the book has a distinct literary flavor. Invaluable as an aid to firsthand acquaintance with the trees.--_Prentice and Power._ The volume is not too large to be easily carried while walking. LUCAS, F.A. Animals of the Past. Illustrated by C.R. Knight and Others. Doubleday. 2.00 The object of this book is to tell some of the interesting facts concerning a few of the better known or more remarkable of these extinct inhabitants of the ancient world.--_Introduction._ "Mr. Knight ... is the one modern artist who can picture prehistoric animals with artistic charm of presentation as well as with full scientific accuracy." While Mr. Lucas did not, in this instance, write for children, they greatly enjoy his descriptions, and are captivated by Mr. Knight's pictures of the strange creatures. There is a very interesting chapter on The Ancestry of the Horse. "Said the little Eohippus (p. 222) I am going to be a horse And on my middle finger-nails To run my earthly course." NEWCOMB, SIMON. Astronomy for Everybody. Doubleday. 2.00 When a work, by an authority as eminent as Professor Newcomb, is interesting to young people, and is to a sufficient degree within their comprehension, it should certainly be put into their hands, even if, as in the present case, it was not specially prepared for them. PARSONS, F.T. (S.) (formerly Mrs. W.S. DANA). How to Know the Ferns. Scribner. 1.50 This companion to How to Know the Wild Flowers gives in convenient form a great deal of pleasantly told information as to the names, haunts, and habits, of our common ferns. They are arranged in six groups, the classification being based on the frond differences. In almost all cases the nomenclature of Gray's Manual has been followed, and in parentheses, that used in the Illustrated Flora of Britton and Brown is given. Indices to the Latin and English names and to technical terms are included. The many illustrations are helpful. ROGERS, J.E. The Shell Book. Doubleday. 4.00 Every person interested in shells has felt the need of a (p. 223) manual of the shell-bearing animals of sea and land, comparable to the comprehensive manuals provided for those who wish to study birds or insects or trees.... The plan and nomenclature of this book follow the accepted standard, The Manual of Conchology, by Tryon and Pilsbry.--_Preface._