Machines at Work
by Mary Elting
Publisher: Harvey House 1962
Number of pages: 100
People have always been able to work and build wonderful things, using just their muscles. And they can do a very great deal more when they use their brains, too. They can invent machines to make work thousands of times easier and faster.
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by Theodore Wood - The University Society
This volume is a sketch of the animal life of the whole world. The author has so skilfully selected his examples to illustrate both the natural groups and the faunas, that his work forms a most commendable plan for the study of natural history.
by Mary Elting - Garden City Books
Sam is the fireman on a big freight locomotive. When Sam was a little boy, he listened to his father and grandfather talking railroad talk. They used all kinds of words that he didn't understand. They had wonderful nicknames for each other.
by John Cargill Brough - Griffith and Farran
To place before the youthful student a compact and concise compendium of the leading and most universally important branches of Science has been my principal object in the preparation of this little volume. Fanciful sketches illustrate these pages.
This book is about science experiments that you can do in the home and experiments that you can nag your teacher to do in school. Featured experiments: Slime recipes; Red cabbage indicator; Pinhole Camera; Raisin Dance; and much more.