II 
INDEX. 
PAGE 
Lead in Paraffin Oil 10 
Leaves, Nothing but H 
Legerdemain, Simple 20 
Lemon Tree Wood 152 
Lens, Condensing, A Oiieap 70 
Lion. The Ant 129 
Liquefaction of Oxygen , 5 
Literature vs. Gymnastics 11 
Makeshift Apparatus, Its Successes and Failures ... 1 
Magic, Lessons in 139, 155 
Magnifying Power 12 
of Microscopes and Telescopes, How to 
Measure r 27 
What Shall we Use 42 
Mechanical Genius , 25 
Work for Girls 44= 
Memory 157 
Microscope, A CoUectiner 120 
Plants Growing Under the 43 
What can be Done with a Cheap 144 
What it Reveals 68 
Microscopic Object, A Common 133 
Objects, A New Slide for 10 
Objects, How to make an Aquarium of 92 
Slides, Finishinar 43 
Microscopes and Telescopes, How to Measure the 
Magnifying Power of 27 
Microscopes, Canada Balsam 107 
Penny 8 
Microscopy 42, 70. 90, 107, 119, 133, 144 
Simple Hints for Beginners in ... 55 
Milk Can, A House Fired by a 83, 98 
Mounting Board for Entomologists 83 
Mucilage 123 
A Good 12 
A Substitute for 28 
Musical Box, Large 98 
Instrument, A Simple 45 
Natural History, How to Study 81 
Non-Conductor for High Temperatures 11 
Nothing, Something Out ol 82 
Offer, A Liberal 121, 134. 148 
Oil, The Best 21 
Ourselves. Concerninar 22 
Our Trial Trip 50, 81, 95, 109, 122. 134, 148 
Ornaments, Lichen 83 
Oxygen, Liquefaction of 5 
Paraffin Oil, Lead in 10 
Parasites on Canaries 11 
Parents, A Word to 162 
Paris Exhibit ion 11 
Past and Future 161 
Paste Eels 42, 108 
Paste, Starch 164 
Patented Articles, The Right to Make 50 
Pencil Marks, To Fix so they will not Rub Out 151 
Periodicals and Pamphlets: 
St. Nicholas 28 
Popular Science Monthly 28 
United States Official Postal Guide 59 
The Mechanic 59 
Nature 59 
Phonograph, The 100 
Photographic Process, New, for Copying Drawings. 95 
Photographers, A Good Hint for 152 
Photography, Simple Lessons in the 4.r tof . .18, 48, 
90, 117, 130. 
PAGE 
Pipes, To Keep Them from Freezing 152 
Histols, Fourth of July. 94. 
Plants Growing Under the Microscope 43 
Plaster of Paris n 
Pliers, Entomologist's 57 
Politeness, The Effect of 131 
Pond and Stream 157 
Pond Hunting 120 
Population of the World, The 164 
Postal Law, New, for the Discouragement of Sci- 
ence 35 
Power, Magnifying 12 
Pressed Plants, Preserving the Colors of 131 
Prizes, Our 69 
Renew, Please 148 
Rubber Stamps 28 
Sailcloth, To Make it Impervious to Water, and yet 
Pliant and Durable , 135 
Science, A Story of 121 
Screwdriver, How to Sharpen a 130 
Second Sight, Miss Heller's 52 
Serpents, Harmless Pharoah's 135 
Sharpening Edge Tools, The Art of 6, 24 
Shot, Bird, Iron 11, 68 
Shower of Fire 41 
Silkworms at Large 10 
Skaters, A Hint for 157 
Slide, A New, for Microscopic Objects 10 
Slide, The Weber 145 
Snakes, Are they Beneficial? 59 
Solder, How to 66 
Soldering Broken Files 151 
Something Out of Nothing 82 
Spliced Joint, The Shoulder and Collar "Wedge 162 
Stage Forceps, A New Form of. 108 
Cheap 26 
Stand for Cut Flowers 98 
Steel and Iron, To Polish. 164 
Steel Tools, Tempering Small 57 
Stoppers, How to Remove Tight 131 
Story, A, of Science 121 
Strength aud Beauty 14 
Summer Numbers 69 
Swindlers Aiding the 4 
Telephone, Call to 59 
Home-made 10 
Telescopes, Measuring Magnifying Power of 27 
Temperatures, Hith. Non-Conductor for 11 
Tempering Small Steel Tools 57 
Ten-Dollar Boat, a Good 65,79 
[Terra Cotta, Imitation 150 
i Toad, The, and its Habits 21 
i Trichina 55 
I Turning Tools for Wood 31 
Veneering 97 
Volvox Giobator 145 
Yorticella 133 
Watch. A Good, for a Dollar 22 
Water, Animalcules in 23 
Carrying in a Sieve 151 
Weather, What will it be To-morrow ? 36 
What we are Doing 134 
Wood Carving 125. 140, 000 
Wood Turning Tools 31 
Woods, Characteristics of Various 27 
World, The Population of the 164 
Workshops, College 3 
i Young Scientist, Contributions tor 94 
