Memoirs of Erasmus Darwh?, M. D. 135 



" Synocha. Papulae post brevem febrlculara erumpen- 

 tes, in pustulas variolae similes, seel vix in suppurationem 

 euntes ; post paucos dies in sqaamulas, lUi'la cicatrice 

 relicta, desinentes." 



As his definition of the small-pox is too precise*, so that 

 of the chicken-pox is loo vague ; and that the last never 

 leaves an escar behind, is contradicted by daily experience. 



Amongst the order Exanthemata, which is thus defined, 



" Morbi contagiosi, semel tantum in decursu vitae ali- 

 quem afficientes ; cum febre incipientes ; definite tempore 

 apparent phlogoses, saepe plurcs, exiguae per cutem spar- 

 sae," appear Erysipelas and Urticaria. 



That these are not contagious is known to all ; and to 

 confirm it. Dr. Thornton suffered himself to be inoculated 

 by Dr. Willan, from a subject who had the Erysipelas 'n\ 

 the highest degree, without any effect. 



Rather with more propriety, Pcstis (the Plague) is ar- 

 ranged under this order, disjointed from Typhus Gkavior,; 

 although it is supposed that persons are liable to the attack 

 more than once in their life. 



Speaking of Aphtha (the thrush), Cullen, in a note, very 

 properly says, " An aphtha inter exanthemata recensenda 

 sit, dubito." 



In the class Neuroses, which is thus defined, 



*' Sensiis et inotus laesi, sine pyrexia idiopathica, et sine 

 morbo locali," 



Is the order Adynamiae, 



** Mohis involuntarii, sive vitales sive naturales, immi- 

 nuti," under which is classed Gen. XLV. Dyspepsia. 



And in the order of Spasmi (spasms), in the above class, 

 appears Pertussis (the hooping-cough), disjointed from 

 those other contagious disorders which only appear once 

 in the course of lite. 



Diarrhoea (a looseness) is made to figure also among 

 the spasms. 



Psora (the itch), and Fractura (a fracture of a bone), 

 follow each other under the same class and order. 



Dr. Darwin very justly complains " that Nosologists are 



♦ The seven, nine, ;iud eleven </«y pock h in tljcmoutli (|f cvory old woman. 

 I 4 IWt 



