ILLUSTRATIONS 



FACING PAGE 



I. Lymphatic System in Scorficenichthys marmoratus 90 



II. Portion of same continued 90 



III . Portion of same continued 90 



IV. Cheek Teeth of Living Insectivores and Bats 108 



V. Teeth of Mesozoic Mammals no 



VI. Japanese Hepaticae 162 



VII. Japanese Hepaticae 164 



VIII. Japanese Hepaticae .. 166 



IX. LilienthaFs and Chanute's Gliding Machines 448 



X. Langley's Aerodrome No. 5 in flight May 6, 1896 448 



XL The Accident to Langley's Aerodrome 448 



XII. The Wright Brothers' Gliding Machine 448 



XIII. Bell Tetrahedral Kites 448 



XIV. The Bell Tetrahedral Kite, "Frost King" 44S 



XV. The Frost King flying in a Ten-mile Breeze 448 



XVI. The Bell Tetrahedral Kite " Siamese Twins," front view. 448 



XVII. The Bell Tetrahedral Kite " Siamese Twins," rear view. 448 



XVIII. A Floating Kite, adapted to be towed out of the water .. 448 



XIX. The Dirigible Airships " Patrie " and " Villede Paris".. 448 



XX. Count von Zeppelin's Airship 448 



XXI. Placostomus lafilatce Eigenmann 458 



XXII. Loricaria vetula Cuvier & Valenciennes 45 S 



XXIII. Po?nolobus melanosto?nus, Geophagus australe and 



Batrachops scottii 45 8 



XXIV. Divided Eyes of Certain Insects 480 



XXV. Divided Eyes of Certain Insects 482 



XXVI. Divided Eyes of Certain Insects 4S4 



XXVII. Microphotographs of Insect Eyes 4S6 



