- Sketch of a coprolite—fossilized animal excrement
- Skeleton of Tyrannosaurus in comparison with human skeleton
- Skeleton of Triceratops
- Skeleton of the Modern Horse and of His Eocene Ancestor
- Skeleton of the Mammoth in the Royal Museum of St. Petersburg
- Skeleton of an Extinct Flightless Toothed Bird, Hesperornis
- Skeleton of a Radiolarian Very Greatly Enlarged
- Shaft-straightening
- Scene from the Prehistoric World - Early Ice Age
- Saurischian dinosaurs - Brontosaurus
- Saurischian dinosaurs - Allosaurus
- Round-headed Ofnet Man
- Rostro-carinate or Eagle-beak Flint Implement
- Rhinoceros tichorhinus, the wooly-coasted Rhinoceros
- Restoration of under side of a trilobite
- Restoration of a Lake Dwelling
- Reindeer Age Engravings and Carvings
- Reindeer Age Articles
- Pterodactyls
- Pterichthys, the Wing Fish
- Primitive Sledge
- Primitive Bread Making
- Primitive armored fish
- Primitive Amphibian
- Prehistoric Whistle
- Prehistoric Men Attacking the Great Cave Bears
- Prehistoric carving of the Mammoth
- Prehistoric carving
- Pottery from Lake Dwellings
- Poise of the Mousterian Man
- Pithecanthropus, the Sub-man of Java
- Pithecanthropos Erectus
- Piltdown Man making Flint Implement
- Phytosaur - Crocodile like reptile
- Phororhacos, a Patagonian Giant of the Miocene
- Peripatus novæ zealandiæ
- Perforated Wolfès Fang, from Ivinghoe Beacon
- Pelycosaur
- Pariasaurus - An Extinct Vegetarian Triassic Reptile
- Palæomastodon
- Palæolithic Men Attacking Cave Bear
- Oval Implement
- Outline sketch restoration of Triceratops
- Outline Restorations of Dinosaurs
- Ornithischian dinosaurs - Triceratops
- Ornithischian dinosaurs - Trachodon
- Ornithischian dinosaurs - Stegosaurus
- Ornithischian dinosaurs - Paleoscincus
- Neolithic or New Stone Age Man
- Neolithic Implements
- Neanderthaler or Mousterian
- Neanderthaler or Mousterian
- Neanderthal Man
- Nautilus
- Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern Bird
- Myotragus
- Mousterians on the march
- Mousterians on the march
- Mousterian Spear-head
- Mousterian Spear-head