| Introduction |
| Useful Supplies for Your Laboratory Table and Shelf |
| ADVENTURE |
| No. |
| 1 We Examine Some Common Objects |
| 2 We Become Crystal Gazers |
| 3 We Hunt a One-Eyed Monster |
| 4 We Learn the Meaning of Privacy |
| 5 We Follow in the Footsteps of Hercules |
| 6 We Learn How a Fly Walks Upside Down |
| 7 We Seed the Famous Amœba |
| 8 We Meet with a Puzzle of Natural History |
| 9 We Dig for Bones in an Ancient Graveyard |
| 10 We Make the Acquaintance of the Desmids |
| 11 We Find Beauty in Unexpected Places |
| 12 We Stab Ourself for Love of Science |
| 13 We Go Marketing with a Honey Bee |
| 14 We Learn What It Means to be Stung |
| 15 We Meet with an Optical Illusion |
| 16 We Make the Acquaintance of Eylais |
| 17 We Take a Lesson in Food Analysis |
| 18 We Raid Our Kitchen |
| 19 We Go Bear Hunting |
| 20 We Discover a Zoological Radio Station |
| 21 We Come Upon a Strange Partnership |
| 22 We Meet Some Relatives of the Amœba |
| 23 We Encounter Some Strange Animals |
| 24 We Learn the Use of Perfume |
| 25 We Test Our Morning Coffee |
| 26 We Learn Something About Sponges |
| 27 We Find Out What Chalk Is Made of |
| 28 We Inquire into the Nature of Yeast |
| 29 We Go Microbe Hunting |
| 30 We Perform a Spicy Experiment |
| 31 We Dig for Worms |
| 32 We Meet Some More Worms |
| 33 We Receive a Pleasant Surprise |
| 34 We Examine a Moss Plant |
| 35 We Make a Study of Toadstools |
| 36 We Become Farmers |
| 37 We View the Most Primitive Insects |
| 38 We Learn to Distinguish Textile Fibers |
| 39 We Trace the Life History of Ferns |
| 40 We Observe the Circulation of Blood |
| 41 We Do a Bit of Surgery |
| 42 We Meet a Champion |
| 43 We Inspect a Spinning Machine |
| 44 We Acquire Insight into the Structure of Roots |
| 45 We Examine an Extraordinary Pipe-Line |
| 46 We Tour Through One of Nature's Factories |
| 47 We Learn That Flowers Are Not Merely Ornamental |
| 48 We Investigate the Structure of Paper |
| 49 We Train Our Lens on Two Familiar Creatures |
| 50 We Behold an Animal That Swims on Its Back |
| 51 We Receive a Lesson in Evolution |
| 52 We Perform a Major Operation |
| 53 We Prove That Appearances Are Sometimes Deceptive |
| 54 We Are Intrigued by a Delightful Relationship |
| 55 We Look at the Sun Animalcule |
| 56 We Approach the Science of Criminal Detection |
| 57 We Solve a Mystery |
| 58 We Observe a Wonderful Provision of Nature |
| 59 "We See What Makes Animals "Go" |