b. October 16, 1807 and d. July 23, 1883

American inventor. He invented a method of producing letter stencils by means of dies, which he was the first to practice and bring into use. He invented a fan-wheel for ventilation and made many experiments with models for flying-machines, all of them involving the use of a fan-wheel or propeller.

Then to new arts his cunning thought applies,
And to improve the work of nature tries.
A row to quills in gradual order plac’d,
Rise by degrees in length from first to last;
As on a cliff th’ ascending thicket grows,
Or, different reeds the rural pipe compose.
Along the middle runs a twine of flax,
The bottom stems are join’d by pliant wax.
Thus, well compact, a hollow bending brings
The fine composure into real wings.

—Ovid’s Metamorphoses

1150—Windmills were in general use in Netherlands.

1253—Windmills were set up in Netherlands.

1264—Windmills were in use in England.

1299—Windmills were frist known in Spain, France and Germany.

1854, June 13—Charles Algernon Parsons was born. He built the “Turbina,” the first steam turbine. He developed and applied the steam turbine as a high-speed, direct-coupled engine to drive a dynamo. His flying-machine was one of the first to use a steam engine of extremely light weight. It lifted itself into the air by means of a screw propeller.

Only $ 1200.00

b. October 15, 1783 and d. October 8, 1855

French physiologist and physician. Admitted to the Academy of Sciences about 1821. He discovered and demonstrated the functions of the spinal nerves. The honor is shared by Charles Bell. Magendie discovered that in the circulation of the blood the arteries act by elasticity, and he proved that the veins are organs of absorption. He wrote “Lectures on the Physical Phenomena of Life” (1836-1842) and “Lectures on the Functions and Diseases of the Nervous System” (1839).

The nerves, with equal wisdom made,
Arising from the tender brain, pervade
In secret pairs the chann’l'd bone,
And thence advance through paths and roads unknown
Formed of the finest complicated thread,
The num’rous cords are through the body spread.
These subtile channels, such is every nerve,
For vital functions, sense and motion serve-
They help to labour and concord the food,
Refine the chyle, and animate the blood.

—Blackmere

1850—Hermann F. Helmholtz invented the myographion, an apparatus for determining the velocity of the nervous current.

1859—Prof. Owen’s system of arranging mammalia according to the nature of their brains was introduced.