About 1590, two Dutch spectacle makers, Zaccharias Janssen and his son Hans, while experimenting with several lenses in a tube, discovered that nearby objects appeared greatly enlarged. That was the forerunner of the compound microscope and of the telescope. In 1609, Galileo, father of modern physics and astronomy, heard of these early experiments, worked out the principles of lenses, and made a much better instrument with a focusing device.

This electronic library on a Gift Quality DVD includes this Bonus book, the Three American Microscope Builders - This book is published to memorialize three early miscrope builders - to point with pride their achievements. A tribute to Charles A. Spencer, Robert B. Tollesn and Herbert R. Spencer.

Collected all on a single gift quality CD, this library of nineteen {19} vintage books and catalogs.

Titles Included:

:: Beck Microscopes
(1900) - 124 pages.

:: How to Use and Care for the microscope
(1916) - 40 pages.

:: Half-hours with the Microscope
1890 - 174 pages.

:: How to See with the Microscope
(1890) - 430 pages.

:: How to Work With the Microscope
(1868) - 550 pages.

:: Micoscopes and Microscopic Accessories
(1902) - 178 pages.

:: Microscope & Accessories Catalog
(1914) - 195 pages.

:: Microscopes and Accessories
(1900) - 194 pages.

:: Microscopic Illustrations of Living Objects
(1838) - 276 pages.

:: Modern optical instruments and their construction
(1896) - 122 pages.

:: Practical Hints on the Selection and Use of the Microscope
1886 - 281 pages.

:: The amateur microscopist
(1871) - 174 pages.

:: The art of study - a manual for teachers and students of the science and the art of teaching
(1900) - 284 pages.

:: The amateur microscopist
1871 - 174 pages.

:: The Microscope - its history, construction, and application
1859 - 650 pages.

:: The Microscope
(1899) - 268 pages.

:: The microscopist - A complete manual on the use of the microscope
(1877) - 372 pages.

:: The microscopist or, A complete manual on the use of the microscope
(1853) - 232 pages.

:: The Preparation and Mounting of Microscopic Objects
(1874) - 232 pages.

:: The theory of optical instruments
(1907) - 88 pages.

:: Three American Microscope Builders
(1945) - 78 pages.

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