well
established; in fact, it is not only safe and harmless, but has great
medical virtue for daily use in many diseases, and is coming into use
for such purposes. In a paper before the Georgia State Dental Society,
Dr. E. Parsons testified strongly to its superiority. "The nitrous
oxide (says Dr. P.) causes the patient when fully under its influence
to have very like the appearance of a corpse," but under this new
anaesthetic "the patient appears like one in a natural sleep." The
language of the press generally has been highly commendatory, and if
Dr. Mayo had occupied so conspicuous a rank as Prof. Simpson, of
Edinburgh, his new anaesthetic would have been adopted at once in every
college of America and Europe.

* * * * *

Mayo's Vegetable Anaesthetic.

A perfectly safe and pleasant substitute for chloroform, ether,
nitrous oxide gas, and all other anaesthetics. Discovered by Dr. U. K.
Mayo, April, 1883, and since administered by him and others in over
300,000 cases successfully. The youngest child, the most sensitive
lady, and those having heart disease, and lung complaint, inhale this
vapor with impunity. It stimulates the circulation of the blood and
builds up the tissues. Indorsed by the highest authority in the
professions, recommended in midwifery and all cases of nervous
prostration. Physicians, surgeons, dentists and private families
supplied with this vapor, liquefied, in cylinders of various
capacities. It should be administered the same as Nitrous Oxide, but
it does not produce headache and nausea as that sometimes does. For
further information pamphlets, testimonials, etc., apply to

DR. U. K. MAYO, Dentist,
378 Tremont St., Boston, Mass.

* * * * *

THE OPEN COURT.

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The _Open Court_ is a high-class, radical free-thought Journal,
devoted to the work of exposing religious superstition, and
establishing religion upon the basis of science.

It is oppo