The names given to the various lines of a tooth on a gear-wheel are as follows: In Figure 233, A is the face and B the flank of a tooth, while C is the point, and D the root of the tooth; E is the height or depth, and F the breadth. P P is the ... Read more of Drawing Gear Wheels at How to Draw.caInformational Site Network Informational
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Biographies

Marco Polo
Lived from 1254-1324 Some years before St. Lou...

Harriet Beecher Stowe.
In a plain home, in the town of Litchfield, Conn., was bor...

George Frederick Handel
(1685-1759) THE WONDER CHILD [Music: (The Messi...

Justinian The Great
Emperor from 527-565 A.D. In the time of Clovi...

Theodoric The Ostrogoth
King from 475-526 A.D. The Ostrogoths, or East...

Oliver Goldsmith
On a low slab in a quiet spot, just north of the Chur...

Attila The Hun
King from 434-453 A.D. The fierce and warlike ...

Louis The Ninth
King from 1226-1270 After the time of Barbaros...

Charles Robert Darwin
On Wednesday, April 26, 1882, sitting in the North...

Maria Mitchell.
In the quiet, picturesque island of Nantucket, in a simple...




Female Biographies




"helen Jackson."
That same day she wrote her last touching poem:-- "Father, I scarcely dare to pray, So clear I see, now it is done, That I have wasted half my day, And left my work but just begun; "So c...

Baroness Burdett-coutts.
We hear, with comparative frequency, of great gifts made by men: George Peabody and Johns Hopkins, Ezra Cornell and Matthew Vassar, Commodore Vanderbilt and Leland Stanford. But gifts of millions have...

Elizabeth Barrett Browning.
Ever since I had received in my girlhood, from my best friend, the works of Elizabeth Barrett Browning, in five volumes in blue and gold, I had read and re-read the pages, till I knew scores by heart....

Elizabeth Fry.
When a woman of beauty, great wealth, and the highest social position, devotes her life to the lifting of the lowly and the criminal, and preaches the Gospel from the north of Scotland to the south of...

Elizabeth Thompson Butler.
While woman has not achieved such brilliant success in art, perhaps, as in literature, many names stand high on the lists. Early history has its noted women: Propersia di Rossi, of Bologna, whose roma...

Ellis And Acton Bell
It has been thought that all the works published under the names of Currer, Ellis, and Acton Bell were, in reality, the production of one person. This mistake I endeavoured to rectify by a few word...

Florence Nightingale.
Eminent Men and Women."] One of the most interesting places in the whole of London, is St. Thomas' Hospital, an immense four-story structure of brick with stone trimmings. Here is the Nightingale Trai...

George Eliot.
Going to the Exposition at New Orleans, I took for reading on the journey, the life of George Eliot, by her husband, Mr. J.W. Cross, written with great delicacy and beauty. An accident delayed us, so ...

Harriet Beecher Stowe.
In a plain home, in the town of Litchfield, Conn., was born, June 14, 1811, Harriet Beecher Stowe. The house was well-nigh full of little ones before her coming. She was the seventh child, while the o...

Harriet G. Hosmer.
Women.")] Some years ago, in an art store in Boston, a crowd of persons stood gazing intently upon a famous piece of statuary. The red curtains were drawn aside, and the white marble seemed almost to ...

Helen Hunt Jackson.
Thousands were saddened when, Aug. 12, 1885, it was flashed across the wires that Helen Hunt Jackson was dead. The _Nation_ said, "The news will probably carry a pang of regret into more American home...

Jean Ingelow.
The same friend who had given me Mrs. Browning's five volumes in blue and gold, came one day with a dainty volume just published by Roberts Brothers, of Boston. They had found a new poet, and one poss...

Lady Brassey.
One of my pleasantest days in England was spent at old Battle Abbey, the scene of the ever-memorable Battle of Hastings, where William of Normandy conquered the Saxon Harold. The abbey was built by Wi...

Louisa M. Alcott.
A dozen of us sat about the dinner-table at the Hotel Bellevue, Boston. One was the gifted wife of a gifted clergyman; one had written two or three novels; one was a journalist; one was on the eve of ...

Lucretia Mott.
Years ago I attended, at some inconvenience, a large public meeting, because I heard that Lucretia Mott was to speak. After several addresses, a slight lady, with white cap and drab Quaker dress, came...

Madame De Stael.
From the painting by Mlle. Godefroy.] It was the twentieth of September, 1881. The sun shone out mild and beautiful upon Lake Geneva, as we sailed up to Coppet. The banks were dotted with lovely homes...

Margaret Fuller Ossoli.
From engraving by Hall] Margaret Fuller, in some respects the most remarkable of American women, lived a pathetic life and died a tragic death. Without money and without beauty, she became the idol of...

Maria Mitchell.
In the quiet, picturesque island of Nantucket, in a simple home, lived William and Lydia Mitchell with their family of ten children. William had been a school-teacher, beginning when he was eighteen y...

Mary A. Livermore.
When a nation passes through a great struggle like our Civil War, great leaders are developed. Had it not been for this, probably Mrs. Livermore, like many other noble women, would be to-day living qu...

Mary Lyon.
There are two women whose memory the girls in this country should especially revere,--Mary Lyon and Catharine Beecher. When it was unfashionable for women to know more than to read, write, and cipher ...

Rosa Bonheur
In a simple home in Paris could have been seen, in 1829, Raymond Bonheur and his little family,--Rosa, seven years old, August, Isadore, and Juliette. He was a man of fine talent in painting, but obli...

William Mitchell.
The answer showed that Miss Mitchell had indeed made a new discovery. Frederick VI., King of Denmark, had, sixteen years before, offered a gold medal of the value of twenty ducats to whoever should di...