Electricity for Young People. E-book. Formato PDF Tudor Jenks   -  Forgotten Books, 2017  - 

This is the story of electricity told so that those who are not especially skilled in the science, who are not electricians, mathematicians, or experts of any kind, can understand how mankind came to find out a new power in the world, how they learned its ways, how they invented means of controlling it.

The Boys Book of Explorations: True Stories of the Heroes of Travel and Discovery in Africa, Asia, and Australia; From the 'Dark Ages' To the 'Wonderful Century'. E-book. Formato PDF Tudor Jenks   -  Forgotten Books, 2017  - 

Burton and Speke visit Abyssinia. — ~they decide to ex plore Central Africa — Exploration of Lake Tanganyika. Speke's discovery of the Victoria nyanza.-a new expedi tion equipped.

When America Was New. E-book. Formato PDF Tudor Jenks   -  Forgotten Books, 2017  - 

We Shall try to see what callings the Ameri cans found would pay them best, what inventions they had to make to meet the new conditions of life where they had to do without many helps to which they had been used at home — to make bread without great mills to grind their ?our, to build houses without boards and timbers ready shaped to their hands, to find or make for them selves many articles Of daily use, such as soap, sugar, candles and Cloth, which they had been used to buy in well provided shops. And over all these difficulties we Shall see them winning their way, not only to comfort.