Thomson, Sir Wyville, on _Pourtalesia_, 10 — on _Thaumastocheles_, 137 — on the darkness of the abyss, 22 — on the phosphorescence of the sea, 26 Thoracostraca, 133 ‘Travailleur,’ French vessel, 12 ‘Triton,’ H.M.S., 12 Tunicata, 140 Vegetable life, absence of, 42 Verrill, on the illumination of the abyss, 23 ‘Vittor Pessani,’ Italian vessel, 12 ‘Vöringin,’ Norwegian vessel, 14 ------------------------------------------------------------------------ MODERN SCIENCE SERIES. _Edited by Sir JOHN LUBBOCK, Bart., M. P._ I. =The Cause of an Ice Age.= By Sir ROBERT S. BALL, LL. D., F. R. S., Royal Astronomer of Ireland. II. =The Horse:= A Study in Natural History. By WILLIAM HENRY FLOWER, C. B., Director of the British Natural History Museum. III. =The Oak:= A Popular Introduction to Forest Botany. By H. MARSHALL WARD, F. R. S. IV. =Ethnology in Folklore.= By GEORGE LAWRENCE GOMME, F. R. S., President of the Folklore Society, etc. V. =The Laws and Properties of Matter.= By R. T. GLAZEBROOK, F. R. S. VI. =The Fauna of the Deep Sea.= By SYDNEY J. HICKSON, M. A., Fellow of Downing College, Cambridge. _Others in preparation._ D. APPLETON CO.’S PUBLICATIONS. _AROUND AND ABOUT SOUTH AMERICA: Twenty Months of Quest and Query._ By FRANK VINCENT, author of “The Land of the White Elephant,” etc. With Maps, Plans, and 54 full-page Illustrations. 8vo, xxiv + 473 pages. Ornamental cloth, $5.00. “South America, with its civilization, its resources, and its charms, is being constantly introduced to us, and as constantly surprises us.... The Parisian who thinks us all barbarians is probably not denser in his prejudices than most of us are about our Southern continent. We are content not to know, there seeming to be no reason why we should. Fashion has not yet directed her steps there, and there has been nothing to stir us out of our lethargy.... Mr. Vincent observes very carefully, is always good-humored, and gives us the best of what he sees.... The reader of his book will gain a clear idea of a marvelous country. Maps and illustrations add greatly to the value of this work.”—_New York Commercial Advertiser._ “The author’s style is unusually simple and straightforward, the printing is remarkably accurate, and the forty-odd illustrations are refreshingly original for the most part.”—_The Nation._ “Mr. Vincent has succeeded in giving a most interesting and valuable narrative. His account is made doubly valuable by the exceptionally good illustrations, most of them photographic reproductions. The printing of both text and plates is beyond criticism.”—_Philadelphia Public Ledger._