uals striving to lighten their own labor, or from some idea
entering the brain of a genius. But we shall have professional inventors
who will be called on to contrive original devices, and his success will
depend on the sound and practical character of his prescriptions.

* * * * *

PROPOSED EXHIBITION OF BATHING APPLIANCES.

The Board of Health of this city has recently been notified that a
Balneological Exhibition, to illustrate the various systems of bathing,
bath appliances, and kindred matters, is to be held in Frankfort-On-Main,
Germany, next summer. The exhibition will last from May to September,
1881.

H. H. Heinrich, No. 41 Maiden Lane, New York, Inventor Patentee, and
Sole Manufacturer of the Self-Adjusting Chronometer Balance, which is
not affected by "extremes of high and low temperatures, as fully
demonstrated by a six months' test at the Naval Observatory at
Washington, D. C., showing results in temperatures from 134 deg. down to
18 deg., of 5-10 of a second only, unparalleled in the history of horology
and certified to by Theo F. Kone. Esq., Commander U. S. N. in charge of
the Observatory. Mr. Heinrich is a practical working mechanic and
adjuster of marine and pocket chronometers to positions and
temperatures, and is now prepared to apply his new balance wheel to any
fine timekeeping instrument, either for public or private use, he also
repairs marine and pocket chronometers, as well as all kinds of
complicated watches, broken or lost parts made new and adjusted. Mr.
Heinrich was connected for many years with the principal manufacturers
of England, Geneva and Locle, Switzerland, and for the last fifteen
years in the United States, and very recently with Messrs. Tiffany &
Co., of Union Square, New York. Shipowners, captains naval and army
officers, railroad and telegraph officials, physicians and horsemen, and
all others wanting true time, should send to him. Fine watches of the
principal manufacturers, for whom he is their agent, constantly on hand.
His office is connected by electric wires with the Naval Observatory's
astronomical clock, through the Western Union Telegraph, thus giving him
daily New York's mean time. Many years ago the British Government made
an offer of L6,000 for a chronometer for her navy, keeping better time
than the ones in use, but no European horologist ever discovered the
sequel which Mr. Heinrich has now worked out to perfection, overcom