Read Ebook: How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity by St John Thomas M Thomas Matthew

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This book explains, in simple, straightforward language, many things about electricity; things in which the American boy is intensely interested; things he wants to know; things he should know.

It is free from technical language and rhetorical frills, but it tells how things work, and why they work.

This book does not contain experiments, or tell how to make apparatus; our other books do that. After explaining the simple principles of electricity, it shows how these principles are used and combined to make electricity do every-day work.

A VERY APPROPRIATE PRESENT

Things a Boy Should Know About Wireless

This book contains much practical and some theoretical information regarding the operation and explanation of wireless outfits. It discusses enough of the theoretical side to make the student sure of himself and to give a well-rounded knowledge of this most practical subject.

The author has explained the various pieces of apparatus needed in a wireless station in such a clear manner that the student can not fail to understand how they work and why they work. The numerous drawings and diagrams simplify the discussions to such an extent that the reader will not want to skip a single paragraph.

"Things a Boy Should Know About Wireless" will be welcomed by thousands of enthusiasts and it should find its way into every library.

From

THOMAS M. ST. JOHN

Cascade Ranch. East Windham,--N.Y.

The Study of Elementary Electricity and Magnetism by Experiment

FOURTH EDITION Price, postpaid, .25.

This is a text-book for amateurs, students, and others who want to take up a systematic course of electrical experiments at home or in school. It will give a practical and experimental knowledge of elementary electricity, and thoroughly prepare students for advanced work. Full directions are given for

TWO HUNDRED EXPERIMENTS.

The experiments and discussions are so planned that the student is always prepared for what follows. Although the experiments may be performed with the apparatus that is usually found in school laboratories, the author has designed a complete set of apparatus for those who want to have their own outfit.

Jan. 1, 1918 STUDENT'S DISCOUNT DISCONTINUED

PRICE TO ALL, .25

Owing to greatly increased costs of labor and materials the discount of 65c formerly allowed on this set has been discontinued. Complete sets only now sold. Shipping weight on improved sets 10 lbs. securely packed in wooden box. Sent by parcel post if proper postage is included in your remittance; otherwise by express charges collect.

Fun With Magnetism and Fun With Electricity have started more young men upon electrical careers than any other scientific outfits ever placed before the public. The thousands upon thousands that have been sold in all parts of the world have furnished fun and science for people of all ages, and the mere fact that they are listed by the New York Board of Education, and recommend to the pupils and teachers of the New York public and private schools is a guarantee of their value. Were it not for the fact that these are made in such large quantities and sold by stores, agents and mail-order houses, the price would be much higher. Don't fail to get these. They have a national reputation.

FUN WITH MAGNETISM

The book contains experiments with the horseshoe magnet, with bar magnets, with floating magnets, etc., etc., thus giving a practical knowledge of the subject; and it is all done in such an interesting way that one can't help remembering it. Every experiment clinches some fact and every fact is important.

Amusing Experiments.--Something for Nervous People to Try.--The Jersey Mosquito.--The Stampede.--The Runaway.--The Dog-fight.--The Whirligig.--The Naval Battle.--A String of Fish.--A Magnetic Gun.--A Top Upside down.--A Magnetic Windmill.--A Compass Upside down.--The Magnetic Acrobat.--The Busy Ant-hill.--The Magnetic Bridge.--The Merry-go-Round.--The Tight-rope Walker.--A Magnetic Motor Using Attractions and Repulsions.--And 43 Others.

No. R1--"Fun with Magnetism," Complete Outfit, postpaid [CO].35

FUN WITH ELECTRICITY

The author of this Fun with Science series has spent a great deal of time and money in experimenting to devise apparatus that will do the proper work and be, at the same time, simple and cheap, and in no outfit has he succeeded better than in Fun with Electricity. When you think of an outfit retailing for 50c. and covering the whole subject of "Static Electricity," giving 60 scientific experiments upon its production, conduction and induction, with a 55-page book of instructions with 38 drawings, and a complete set of apparatus of 20 articles for performing these 60 experiments, you will understand why the sales of this outfit have been enormous. As the subject is presented in a fascinating way--and not as mere dry science--every one likes to do the experiments. No wonder these sets are highly praised by parents and educators in every part of the country!

There is Fun in these Experiments: Chain Lightning.--An Electric Whirligig.--The Baby Thunderstorm.--A Race with Electricity.--An Electric Frog Pond.--An Electric Ding-Dong.--The Magic Finger.--Daddy Long-Legs.--Jumping Sally.--An Electric Kite.--Very Shocking.--Condensed Lightning.--An Electric Fly-Trap.--The Merry Pendulum.--An Electric Ferry-Boat.--A Funny Piece of Paper.--A Joke on the Family Cat.--Electricity Plays Leap-Frog.--Lightning Goes Over a Bridge.--Electricity Carries a Lantern.--And 40 Others.

There isn't an outfit anywhere at any price that gives better value for the money. An ideal present for a boy.

No. R2--"Fun with Electricity," Complete Outfit, postpaid [CO].65

FUN WITH PUZZLES

Secret Writing is explained in this book, and it shows how you can write letters to your friends and be sure that no one can read them unless they are also in the secret. This one thing alone will give you a great deal of enjoyment. Get this outfit and have some fun.

No. R3--"Fun with Puzzles," Complete Outfit, postpaid [CO].35

FUN WITH SOAP-BUBBLES

Soap-Bubble Parties using these outfits create real sensations. Why not be the first in your town to give a "Fun with Soap-Bubbles Party?" Just write and ask about the price for any special number of them--say six or a dozen.

"There is nothing more beautiful than the airy-fairy soap-bubble with its everchanging colors." This outfit gives the best possible amusement for old and young.

No. R4--"Fun with Soap-Bubbles," Complete Outfit, postpaid [CO].35

Three extra packages of prepared soap, postpaid .10

FUN WITH SHADOWS

The Outfit contains everything necessary for all ordinary shadow pictures, shadow entertainments, shadow plays, etc. The following articles are included: One book of Instructions called "Fun with Shadows"; 1 Shadow Screen; 2 Sheets of Tracing Paper; 1 Coil of Wire for Movable Figures; 1 Cardboard Frame for Circular Screen; 1 Cardboard House for Stage Scenery; 1 Jointed Wire Fish-pole and Line; 2 Bent Wire Scenery Holders; 4 Clamps for Screen; 1 Wire Figure Support; 1 Wire for Oar; 2 Spring Wire Table Clamps; 1 Wire Candlestick Holder; 5 Cardboard Plates containing the following printed figures that should be cut out with shears; 12 Character Hats; 1 Boat; 1 Oar-blade; 1 Fish; 1 Candlestick; 1 Cardboard Plate containing printed parts for making movable figures.

No. R5--"Fun with Shadows," Complete Outfit, postpaid [CO].35

FUN WITH PHOTOGRAPHY

Popular Pastimes are numerous, but to many there is nothing more fascinating than photography. The magic of sunshine, the wonders of nature, and the beauties of art are tools in the hands of the amateur photographer. If you want to get a start in this up-to-date hobby, this outfit will help you. You will enjoy the work and be delighted with the beautiful pictures you can make.

The Outfit contains everything necessary for making prints--together with other articles to be used in various ways. The following things are included: One Illustrated Book of Instructions, called "Fun With Photography"; 1 Package of Sensitized Paper; 1 Printing Frame, including Glass, Back, and Spring; 1 Set of Masks for Printing Frame; 1 Set of Patterns for Fancy Shapes; 1 Book of Negatives Ready for Use; 6 Sheets of Blank Negative Paper; 1 Alphabet Sheet; 1 Package of Card Mounts; 1 Package of Folding Mounts; 1 Package of "Fixo."

No. R6--"Fun with Photography," Complete Outfit, Postpaid [CO].65

FUN WITH CHEMISTRY

Chemistry is universally considered to be an interesting subject, even in school, and it is certainly an important one in these days of scientific progress. This outfit starts you at the right place and presents the elements of the subject in a most interesting fashion. The experiments are so enjoyable that you will take pleasure in doing them over and over again, and you will want to do them for your friends. You can have a lot of fun with this set, and even if you have taken advanced courses in the subject you will find something new in these experiments. The more you know about chemistry the more you will enjoy it, for then you can more easily appreciate what a splendid outfit this is for the money.

The Outfit contains over 20 different articles, including chemicals, test-tubes, adjustable ring-stand, litmus paper, filter paper, glass tubing, etc.; in fact, everything needed for the forty-one experiments. The Book of Instructions is fully illustrated, and measures 5x7-1/2 inches.

Fun Found Here: From White to Black, or the Phantom Ship.--Yellow Tears.--Smoke Pearls.--An Ocean of Smoke.--A Tiny Whirlwind.--A Smoke Cascade.--An Explosion in a Teacup.--A Gas Factory in a Test-Tube.--Making Charcoal.--Flame Goes Over a Bridge.--A Smoke Toboggan-Slide.--Fountains of Flame.--Making an Acid.--Making an Alkali.--A Chemical Fight.--Through Walls of Flame.--An Artificial Gas Well.--A Lampblack Factory.--Steam from a Flame.--The Flame that Committed Suicide.--Chemical Soup.--A Baby Skating-Rink.--A Magic Milk-Shake.--The Wizard's Breath.--A Chemical Curtain.--Scrambled Chemicals.--And Many Other Experiments.

No. R7--"Fun with Chemistry," Complete Outfit, postpaid [CO].65

ELECTRIC SHOOTING GAME

Shooting Animals by electricity is certainly a most original game, and it will furnish a vast amount of amusement to all. The game is patented and copyrighted--because it is really a brand-new idea in games--and it brings into use that most mysterious something called electricity. While the electricity is perfectly harmless, there being no batteries, acids or liquids, it is very active and you will have plenty to laugh at. It is so simple that the smallest child can play it and so fascinating that grandpa will want to try it.

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