The diary of an upper middle class Austrian girl, this book describes her life between the ages of eleven and fourteen. It's a coming of age story full of angst, boys, and questions.

Treatise on Light was published in 1690 and is probably the largest scientific volume on light published before Newton's Opticks. The book explains how light travels (i.e., that it has a certain velocity), and what happens when it hits a surface (refraction and reflection). A large portion of the book is devoted to the double refraction occurring in Iceland chrystal, and all drawn conclusions are proved geometrically. Christiaan Huygens (1629 - 1695) was a prominent physicist and astronomer. His main discoveries are the centrifugal force, collision laws for bodies and the argument that light consists of waves...

In this volume, Orison Swett Marden explains the road to success in simple terms for the benefit of anyone, who wishes to follow in his footsteps. Over 100 years after publication, most of these lessons are still valid today.

Airlords of Han is the 2nd Buck Rogers story, the sequel to Armageddon 2419 A.D.. Anthony Rogers takes the fight to free 25th Century America to the Han overlords. From the March, 1929 issue of Amazing Stories.

The Republic is a Socratic dialogue written by Plato around 380 BC concerning the definition of justice and the order and character of the just city-state and the just man. It is Plato's best-known work and has proven to be one of the most intellectually and historically influential works of philosophy and political theory. In it, Socrates along with various Athenians and foreigners discuss the meaning of justice and examine whether or not the just man is happier than the unjust man by considering a series of different cities coming into existence "in speech", culminating in a city (Kallipolis) ruled by philosopher-kings; and by examining the nature of existing regimes...

This dialogue brings Socrates face to face with the famous sophist Gorgias and his followers. It is a work likely completed around the time of "Republic" and illuminates many of the spiritual ideas of Plato. The spirituality, as Jowett points out in his wonderful introduction, has many ideas akin to Christianity, but is more generous as it reserves damnation only for the tyrants of the world. Some of the truths of Socrates, as presented by Plato, shine forth in this wonderful work on sophistry and other forms of persuasion or cookery.

How do elephants drink? What is the Law of the Jungle at the water hole? How does an elephant baby learn to feed and learn to swim? How do they walk under water? In what order do buffaloes drink? How do buffaloes fight the tiger? These and other wild inhabitants of the Indian jungle such as pigs, wild dogs, deer, camels, bears and birds are discussed in lively stories to entertain but mainly educate children of school age. "One of the great thinkers of the world has said that all the sciences are embodied in natural history...

The Metal Monster is an Abraham Merritt fantasy novel.Dr. Goodwin is on a botanical expedition in the Himalayas. There hemeets Dick Drake, the son of one of his old science acquaintances. They are witnesses of a strange aurora-like effect, but seemingly a deliberate one. As they go out to investigate, they meet Goodwin’s old friends Martin and Ruth Ventnor, brother and sister scientists. The two are besieged by Persians as Darius III led when Alexander of Macedon conquered them more than two thousand years ago.(Wikipedia)

Dr. David Throckmartin’s scientific expedition to the South Sea Islands discovers among ancient ruins a portal into Muria, an unknown underground world. After the disappearance of Throckmartin, his wife and two companions, his old friend Dr. Walter Goodwin enters Muria with a rescue party, only to confront an fantastic world filled with incredible beings, astounding scientific advances, and the worship of the most evil of all creatures, The Dweller. (Introduction by Mark Nelson)

A thrilling intergalactic adventure, Star Surgeon follows the journey of Dal Timgar as he strives to achieve his lifelong goal of becoming a physician. Published in 1959, the novel explores themes of discrimination, prejudice, and racial oppression, while also presenting key elements of science fiction including interplanetary travel, intergalactic medicine, aliens, and advanced technology. The thrilling tale begins with the introduction of Dal Timgar, a young alien from Garv, who has aspired to become a doctor for as long as he can remember...

These Five Stories were written by Alan Edward Nourse, an American science fiction (SF) author and physician. He wrote both juvenile and adult science fiction, as well as nonfiction works about medicine and science. His SF works generally focused on medicine and/or psionics. Psionics refers to the practice, study, or psychic ability of using the mind to induce paranormal phenomena. Examples of this include telepathy, telekinesis, and other workings of the outside world through the psyche.