Scientific American Supplement, No. 643 | Page 2

regiment of red hussars whose chief
he is.
His solicitude for the army manifests itself openly. It is not without
pride that he regards his eldest son, who will soon be six years old, and
who is already clad in the uniform of a fusilier of the Guard. Prince
William is a soldier in spirit, just as harsh toward himself as severe
toward others. So he is the friend and emulator of Prince Von Bismarck,
who sees in him the depositary of the military traditions of the house of
Prussia, and who is preparing him by his lessons and his advice to
receive and preserve the patrimony that his ancestors have conquered.
Prince William was born January 27, 1859. On the 29th of February,
1881, he married Princess Augusta Victoria, daughter of the Duke of
Sleswick-Holstein. Their eldest son, little Prince William, represented
with his father in our engraving, was born at Potsdam, May 6,
1882.--_L'Illustration._
* * * * *

GENERAL F. PERRIER.

Francois Perrier, who was born at Valleraugue (Gard), on the 18th of
April, 1835, descended from an honorable family of Protestants, of
Cevennes. After finishing his studies at the Lyceum of Nimes and at St.
Barbe College, he was received at the Polytechnic School in 1853, and
left it in 1857, as a staff officer.
Endowed with perseverance and will, he owed all his grades and all his
success to his splendid conduct and his important labors. Lieutenant in
1857, captain in 1860, major of cavalry in 1874, lieutenant-colonel in
1879, he received a year before his death the stars of brigadier-general.
He was commander of the Legion of Honor and president of the
council-general of his department.
General Perrier long ago made a name for himself in science. After
some remarkable publications upon the trigonometrical junction of
France and England (1861) and upon the triangulation and leveling of
Corsica (1865), he was put at the head of the geodesic service of the
army in 1879. In 1880, the learned geodesian was sent as a delegate to
the conference of Berlin for settling the boundaries of the new
Greco-Turkish frontiers. In January of the same year, he was elected a
member of the Academy of Sciences, as successor to M. De Tessan. He
was a member of the bureau of longitudes from 1875.
In 1882, Perrier was sent to Florida to observe the transit of Venus.
Thanks to his activity and ability, his observations were a complete
success. Thenceforward, his celebrity continued to increase until his
last triangulating operations in Algeria.
[Illustration: GENERAL FRANCOIS PERRIER.]
"Do you not remember," said Mr. Janssen recently to the Academy of
Sciences, "the feeling of satisfaction that the whole country felt when it
learned the entire success of that grand geodesic operation that united
Spain with our Algeria over the Mediterranean, and passed through
France a meridian arc extending from the north of England as far as to
the Sahara, that is to say, an arc exceeding in length the greatest arcs
that had been measured up till then? This splendid result attracted all
minds, and rendered Perrier's name popular. But how much had this

success been prepared by long and conscientious labors that cede in
nothing to it in importance? The triangulation and leveling of Corsica,
and the connecting of it with the Continent; the splendid operations
executed in Algeria, which required fifteen years of labor, and led to
the measurement of an arc of parallels of nearly 10° in extent, that
offers a very peculiar interest for the study of the earth's figure; and,
again, that revision of the meridian of France in which it became
necessary to utilize all the progress that had been made since the
beginning of the century in the construction of instruments and in
methods of observation and calculation. And it must be added that
General Perrier had formed a school of scientists and devoted officers
who were his co-laborers, and upon whom we must now rely to
continue his work."
The merits of General Perrier gained him the honor of being placed at
the head of a service of high importance, the geographical service of
the army, to the organization of which he devoted his entire energy.
In General Perrier, the man ceded in nothing to the worker and scientist.
Good, affable, generous, he joined liveliness and good humor with
courage and energy. Incessantly occupied with the prosperity and
grandeur of his country, he knew that true patriotism does not consist in
putting forth vain declamations, but in endeavoring to accomplish
useful and fruitful work.--_La Nature._
General Perrier died at Montpellier on the 20th of February, 1888.
* * * * *

THE PRESIDENT'S ANNUAL ADDRESS TO THE ROYAL
MICROSCOPICAL SOCIETY.[1]
[Footnote 1: Delivered by the Rev. Dr. Dallinger, F.R.S., at the