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the title, with their addresses, college from which they graduated, date of graduation, specialty, if any, and institutions with which they are connected ; also, the various organizations, institutions, and State and city matters connected with medicine; laws relating to the practice of medicine and dentistry, and lists of dentists and druggists in the localities mentioned. The information with reference to colleges, hospitals, institutions, and organizations includes all details necessary for a good understanding of each. The volume is well indexed, so that the information sought can be readily obtained. Bound in flexible morocco, gilt-edged,—a sightly volume, and pleasant to handle.

Transactions Of The College Of Physicians Of Philadelphia.

Third Series, Yol. VII. Philadelphia: Printed for the College,

and for sale by P. Blakiston, Son & Co. 1884.

This is an interesting and valuable volume in the series published by the College of Physicians. It contains memoirs of Dr. Thomas Stewardson, Dr. George Fox, Dr. J. Forsyth Meigs, and Dr. Samuel D. Gross; also, fourteen papers on practical and scientific topics, among which are "Chronic Nasal Catarrh in Children" and "A New Method of Becording the Motions of the Soft Palate," by Harrison Allen, M.D.; and "The Composition and Methods of Analysis of Human Milk," by Professor Albert K. Leeds.

Annuaire General Des Dentistes. Publie sous le patronage de l'lnstitut Odontotechnique de France, suivi d'un Memorial Therapeutique du Medecin-Dentiste. Par le Dr. Andrieu, et augmente d'un Formulaire du meme auteur. 1885-1886. 4e anne. Paris: Aux Bureaux du Secretariat de l'lnstitut Odontotechnique de France. The object of this little annual is amply set forth in the title as

above transcribed. The fact that it has reached the fourth year of

its publication indicates that it is appreciated in France and the

adjacent countries for which it is intended.

Transactions Of The American Dental Association, at the Twentyfourth Annual Session, held at Saratoga Springs, 1ST. Y., commencing on the 5th of August, 1884. Philadelphia: The S. S. White Dental Manufacturing Co., 1885.

No member or friend of this leading American association can complain of a want of care and taste in the make-up and appearance of their annual volume of Transactions for 1884, which is an attractive octavo of 182 pages, making probably the most extended volume yet issued by it. Besides the full report of the regular proeeedings, it contains the "amended Constitution adopted at Saratoga in 1869, with amendments up to and including the session of 1884," and also the Code of Dental Ethics. These, of course, make this issue of the Transactions more than usually valuable. Two beautiful plates accompany and illustrate Dr. Williams's essay on the histology of the teeth.

Pamphlets Eeceived.

Eeport of Committee on School Hygiene in Tennessee. Ey Daniel F. Wright, M.D., of Clarksville, Tenn., member of the State Board of Health and chairman of its committee on the subject. Eeprinted from the second report of the State Board of Health. January 1,

1885.

Philadelphia Social Science Association: Sanitary Influences of Forest Growth. Eead at a meeting of the Association, January 29, 1885, by Dr. J. M. Anders. Eeprinted from the Proceedings of the Philadelphia County Medical Society. Published by the Philadelphia Social Science Association.

Experimental Eesearches on Cicatrization in Blood Vessels after Ligature. By £T. Senn, M.D., of Milwaukee, Wis. Extracted from the Transactions of the American Surgical Association, Yol. II., 1884. Philadelphia: Collins, printer, 1885.

Typhoid Fever and Low Water in Wells. By Henry B. Baker, M.D., Lansing, Mich. Eeprinted from the annual report of the Michigan State Board of Health for the year 1884. By authority. Lansing: W. S. George & Co., 1885.

"Dental Caries—a Critical Summary," by Henry Sewill, M.E.C.S., L.D.S., Eng. A Eeview, by F. Searle, D.D.S., Springfield, Mass.

OBITUARY.

E. P. TUIiL, D.D.S.

Died, in Elkton, Md., April 6, 1885, of typhoid fever, Dr. K. F. Titll, in the thirty-fifth year of his age.

Dr. Tull studied dentistry with Dr. T. II. Musgrove, then of Elkton. He graduated at the Pennsylvania College of Dental Surgery, class of 1871, and located in Elkton in 1872, where he successfully practiced his profession until his decease. He was a young man of more than ordinary ability, an efficient dentist, and much respected in the town where he resided.

PERISCOPE.

Locomotor Ataxia With Loss Of Teeth.—The following anomalous case of locomotor ataxia has been under my care for three months in the Episcopal Hospital. The patient is now under the care of Dr. Henry M. Fisher, who courteously allows me to use the notes of the case.

Mr. A., set. 45, a well-marked ataxic for over five years, presents the following history, some points of which seem well worthy of record. Nasal catarrh exists in several members of the family, including himself. During the war he was wounded in the hip and ankle slightly; the wounds healed kindly. He was confined for some time in Libby and Belle Isle prisons, and since then has never . felt strong. He denies having had syphilis. When 39 years of age he began to show the first symptoms of ataxia; these were diplopia, dizziness, and a staggering gait. One and a half years later he began to have lancinating pains in the extremities, and later in the bowels. Five years ago he began to have transient attacks of difficulty of hearing, and this has increased since then until about one year ago, when he became absolutely deaf.

He has always been constipated, and one year ago had slight difficulty in urination. Within the last seven months he has had severe gastric crises. Eyesight good until the last seven or eight months, except during the first year. Four years ago the symptoms for which I present the case to-night first appeared. This was a loosening and a subsequent falling out of the lower wisdom teeth. No pain nor discomfort preceded this, and the teeth were perfectly sound. In fact, he had an uncommonly fine set of teeth. After this his teeth gave him no trouble until about seven months ago, when the same change began in the upper jaw, causing the loss of every tooth except the right first molar, which still remains firm.

The sequence of these events appears to be about as follows: First, the teeth loosen; then the gums recede, showing in places the alveolar processes denuded; the teeth then fall or are pulled out by the fingers, and finally the alveolar processes separate in small fragments, with slight suppuration, or are detached in larger pieces. The gum then heals. The largest piece of bone thus separated shows the sockets of three incisors, and a portion of a fourth. The teeth show no absorption of their fangs, and are almost without exception perfectly sound. About four months elapse between the loosening of a tooth and the final healing of the gum.

Other points of interest in this case are as follows: The patient is extremely pallid; he has the ataxic gait, although this is not very pronounced. He cannot stand with eyes closed. The knee-jerk is absent, and has been for the last four years. There is no anesthesia of the feet or legs, and the patient localizes touch fairly; there is, however, some analgesia. There is no retardation of sensation. Examination of the eyes shows external strabismus of both eyes. Pupils pin-point for near accommodation, and relax for distant vision; no reaction to light. Ophthalmoscopic examination shows left eyeground normal, and but slight atrophy of nasal border of right disk. His sense of smell and of taste are good. There are no lesions in any of his joints to be detected.—Dr. Morris J. Lewis, Report Philadelphia Neurological Society, in Medical and Surgical Reporter.

Commercial Disinfectants.—In a preliminary report of the committee on disinfectants of the American Public Health Association, Dr. George M. Sternberg, U. S. A., gives the result of experimental investigations of the various disinfectants in the market. He claims that many of the so-called disinfectants are of no use as germicides, and that, though there is good authority for calling a substance which will prevent putrefactive decomposition or which will destroy bad odors a disinfectant, yet it should be remembered that a disinfectant from this point of view does not necessarily destroy infectious material. He also claims that as a matter of fact those agents which by laboratory experiments have been proved to be the most potent germicides have, by the experience of sanitarians, been shown to be the most reliable disinfectants. Evidently there can be no partial disinfection; either the infecting power of the material to be disinfected is destroyed or it is not. It is therefore essential that we keep on the safe side in the practical application of those agents which withstand these tests. Dr. Sternberg says: "It is well known that anthrax spores constitute one of the most difficult tests of germicide power. We may safely assume then that an agent which will destroy these spores will also destroy all known disease germs and probably all organisms of this class known or unknown."

The time of exposure to the disinfecting agent in the experiments from which the results are recorded was two hours, and the amount of the solution of the disinfecting agent was equal to the amount of material to be disinfected.

Numerous other experiments were made, but only those are recorded here which fix the limits between success and failure.

In the table (copied from the Medical News) the agents are arranged with reference to their relative efficiency.

List of Commercial Disinfectants Tested.

Name upon Label.

Little's Soluble Phenyle (Morris, Little & Co., Brooklyn),
Labarraque's Solution (Liq. sodce chlorinatce); name of

manufacturer not given,
Liquor Zinci Chloridi (Squibb's),
Feuchtwagner's Disinfectant (L. Feuchtwagner & Co., New

York),

Labarraque's Solution (from Frer6, Paris),
Phenol Sodique (Hance Bros. & White, Philadelphia),
Piatt's Chlorides (Henry B. Piatt, New York),
Girondin Disinfectant (James Meyer, Jr., New York),
Williamson's Sanitary Fluid (D. D. Williamson, New

York), 25 20

[table]

Name upon Label. Per cent-in Per cent- in

which active, which failed.

Bromo-chloralum (Bromo-Chemical Co., New York), . 25 20

Blackman Disinfectant (Blackman Disinfectant Co.,

New York), ...... 30 20

Squibb's Solution of Impure Carbolic Acid (about two

percent.), 50

Burchardt's Disinfectant (J. H. Harty & Co., New

York), 50

Phenol Sodique (7 Bue Coq. He>on, Paris), . . 50

Listerine (Lambert & Co., St. Louis), ... 50

Dental Legislation For The District Op Columbia.—A bill to regulate the practice of dentistry in the District of Columbia passed the House of Kepresentatives on January 12. It provides for a board of examiners, and requires them to make proper inquiries into the fitness of all who practice dentistry in the District of Columbia; to issue certificates of competency, and to keep a full register of dentists so practicing. Non-compliance with the provisions of the act is made punishable by a fine of not less than fifty dollars, or more than two hundred dollars, in default of the payment of which, imprisonment for not less than thirty days nor more than ninety days. Nothing in the act to be so construed as to prevent surgeons and physicians from extracting teeth and prescribing for or treating diseases of the mouth.—Med. News.

HTNTS AND QUERIES.

Keply to F. S. Harris, who asks, in the March number of the Dental CosMos, what causes scars on the palatal surface of vulcanite plates. If he will abandon the moist heat process in packing, the little scars will not appear. They are caused by the moisture being converted into steam; hence the scars. To prove it, let him put a few drops of water under the rubber in a test case, and he will have a plate pretty well indented. I have had the same trouble with the same rubber, as well as with other rubbers. I now pack with dry heat, and have no trouble.—W. T. Magill, Rock Island, III.

Dr. B. 3T. Arrington, in an article in the March number of the Dental CosMos, states that he uses sulphuric acid (pure sulphuric) diluted one part to ten or twenty or thirty of water in the treatment of pyorrhea. Sulphuric acid is very corrosive, and is especially so even when diluted to one in thirty, and much more corrosive in the proportion of one in twenty or one in ten. It is not safe practice to use it in such concentrated strength. The dilute acid of the IT. St Pharmacopoeia is one in ten, and the dose is from ten to thirty drops largely diluted. The method of treatment proposed must be injurious to the structure of the enamel and cementum, if persisted in for any considerable length of time, and I would caution neophytes to carefully rinse the mouth with lime-water or milk when such treatment is resorted to. In my opinion the acid should be diluted to one in sixty or eighty, and what would be still better—make no use of it at all in the manner proposed.—H2 S 04.

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