To this purpose those may be us'd that serve in other kinds of Tumours: But as for the extirpation of the _Cystis_, it is done by dividing the Tumour into four Parts, by procuring Suppuration, and by consuming the Bag by little and little. The _Bronchocele_ alone will not admit this Extirpation, by reason of the great Number of Nerves, Veins, and neighbouring Arteries amidst which the Tumour is settl'd. However _Bronchotomy_, or opening the Throat, may be perform'd; which is an Operation peculiar to this Tumour. * * * * * {131} CHAP. V. _Of Critical, Malignant, Pestilential, and Venereal Tumours and Impostumes._ _What difference is there between Critical, Malignant, Pestilential, and Venereal Tumours?_ It consists in these particular circumstances, _viz._ that Critical Tumours or Impostumes are indifferently all such as are form'd at the End or Termination of Diseases, in whatsoever Place or Part they appear. Malignant Impostumes or Tumours are those that are obstinate, and do not easily yield to the most efficacious Remedies. Pestilential Impostumes or Tumours are those that are accompany'd with a Fever, Swooning, Head-ach, and Faintness: They usually arise in the time of a Plague or Pestilence, and are contagious. Venereal Tumours or Impostumes are those that appear only at the bottom of the Groin, and are the product of an impure _Coitus_. However, the Critical Impostume may be Malignant, Pestilential, and Venereal; the Malignant Impostume may be neither Critical, nor Pestilential, nor Venereal: But the Pestilential and Venereal Tumours are always Malignant. {132} _What are the ordinary kinds of Critical Tumours or Impostumes?_ They are the _Anthrax_, the Boil, the _Phlegmon_, and the _Parotides_ or Swellings in the Almonds of the Ears. _What are the kinds of Malignant Tumours or Impostumes?_ They are the _Cancer_, the _Scrophula_ or King's-Evil; and others of the like Nature. _What are the kinds of Pestilential Tumours or Impostumes?_ They are Carbuncles that break out every where; a sort of _Anthrax_ which appears under the Arm-pits, and Bubo's in the Groin. _What are the kinds of Venereal Tumours or Impostumes?_ They are Botches or Bubo's and Cancers that arise in the Yard; as also Wens and _Condyloma's_ in the Fundament. _What is the difference between a Pestilential and a Venereal Buboe?_ They may be distinguish'd by their Situation, and respective Accidents; the Pestilential lying higher, and the Venereal lower: Besides, a Fever, Sickness at the Heart, and an universal Faintness or Weakness, are the ordinary concomitant Circumstances of the former; whereas the Venereal Buboe is always the consequence of an impure _Coitus_, and is attended with no other Symptoms than those of common Tumours, _viz._ Pain, Heat, Shootings or Prickings, &c. As for the Remedies, they may be sought for among those that have been already prescrib'd for Tumours. * * * * *