Mercurial Ointment. Called also Blue or Neapolitan Ointment. Composed of Mercury lb. j.; Prepared Lard lb. j.; Prepared Suet oz. j.; thoroughly incorporated.

Med. Prop. and Action. Chiefly used externally, either as a local or constitutional remedy. (See Inunction.) In Germany, it is given internally in the form of pill, from the idea that it induces salivation more speedily than any other form of Mercury. It may be applied externally in a diluted form. Ung. Hyd. Mitius (Ung. Hyd. lb. j., Adipis lb. ij.), or in the form of Compound Cerate (Ung. Hyd., Cerat. sapon. Comp. (Pharm. Lond.) aa oz. iv., Camphor oz. j.). Inunction with Ung. Hydrarg. is a most valuable adjunct to the internal use of Mercury.

1507. Therapeutic Uses

In Syphilis, the introduction of Mercury into the system by inunction is strongly advised by Sir B. Brodie; but it has not been generally adopted on account of its uncleanliness and other inconveniences. (See sects. 1366, 1367.)

1508. In Pneumonia Of Infants, Dr

West speaks highly of the value of mercurial inunction, when the internal use of the mineral causes purging. (See sect. 1386.)

1509. In Erysipelas, The Local Application Of Ung

Hyd. was first advocated by Dr. McDowel,* of Dublin. He directs the inflamed parts to be smeared over with the ointment, and states that three or four applications generally suffice to arrest the progress of the disease. In most cases, it causes salivation. Rayer declares it to be utterly useless.

1510. In Small-Pox, To Prevent Pitting, The Local Application Of Ung

Hyd. has been advised by Bricquet, Zimmermann, Serres, Velpeau, Rosen, and others. More recently, Prof. Bennett relates a very severe case of confluent Small-pox treated with this ointment; and he states that its good effects, in locally modifying the intensity of the inflammation, and preventing cicatrices, were unequivocal. This treatment, however, is not devoid of danger; as, in a case related by Dr. G. Paterson,* excessive and dangerous salivation followed its application.

* Dublin Journ. of Med., vol. vi. Diseases of the Skin, op. cit.

Clin. Lect., Monthly Journ. of Med. Sciences, Jan. I850.

1511. In Cancer, M

Tranchon advises the external use of Pomade de Vigo, a preparation similar to Emp. Hyd. c. Ammo-niaco (L. Ph.); but the weight of evidence is decidedly opposed to the use of Mercury in any form, in this disease.

1512. In Subacute Ovaritis, Dr

Tilt % speaks highly of frictions of mercurial ointment, combined with Camphor and Belladonna, over the seat of disease. In some instances, improvement occurs in a few days, in others in six or eight weeks. He speaks highly of its efficacy. He recommends the following formula: -1512 In Subacute Ovaritis Dr 137 Ung. Hydrarg. 3ij., Ext. Belladon. 3j., CerAe 3ij., Adipis j., M. Warm-water enemas, and gentle aperients (Castor-oil), should accompany this treatment.

1513. In Indurations and Enlargements of the Testicles, and in Orchitis, inunction of this ointment is a local measure attended with the best effects.

1514. In Phlegmasia Dolens, much benefit accrues from the local application of this ointment, either alone or conjoined with Ext. BelladonnAe.

1515. In All Acute Inflammations, Inunction Of Ung

Hyd. Fort, over the seat of the disease, and also in the armpits and groins, may be employed, when it is desirable to bring the system rapidly under the influence of Mercury.

1516. In Diseases And Injuries Of The Joints Unattended With Inflammation, The Cerat

Hydrarg. Comp. (ante) proves highly serviceable. This, with pressure and complete rest of the affected joint, formed the treatment which obtained so high a name for the late Mr. Scott,§ of Bromley.