VOL. L.] PHILOSOPHICAL TRANSACTIONS. 231 



voided by a woman who had long laboured under the jaundice, from a small sore 

 at the pit of the stomach, at the part where she had felt a pain and hardness 

 about a quarter of a year before. For a more particular account of these cases 

 the reader is referred to this author s collected works, entitled Medical Essays 

 and Observations. 



voluntary motion- I shall look for some opportunity of showing you my just regard, and am alwayi 

 yours, Haller." This objection will be found very satisfactorily answered, p. 17, 54', Medical 

 Essays and Observations. These papers were collected and enlarged, and published at Salop in 1771, 

 under the title of Essay on the Ganghons of the Nerves. They were again published in 1795, with 

 many valuable physiological and pathological additions, and with several other separate tracts, in one 

 volume, under the title of " Medical Essays and Observations, with Disquisitions relating to the 

 Nervous System." 



The vol. of Medical Essays printed in 1795, contains all the tracts published by Dr. Johnstone, 

 except his inaugural Dissertation, his Treatise on the Fever of 1756, the Life of Dr. Gregory in the 

 Manchester Memoirs, the Life of his dearest Friend and Companion, the Rev. Dr. Job Orton, pub- 

 lished under the article Doddridge, in the Biographia Britannica, and 2 papers in the Memoirs of the 

 Medical Society of London on the Angina and Scarlet Fever of 1778, and on the Diseases of Needle- 

 makers, He published besides separately a Dialogue against that most infamous of all traffics, the 

 slave trade, and an Analysis of Walton-water near Tewkesbury, which he proved to be nearly the 

 same in quality as the purging waters of Cheltenham. At the end of this analysis he again displayed 

 the strong inventive tendency of his intellectual powers, by assigning the uses of the lymphatic 

 glands. 



At Kidderminster Dr. Johnstone continued in a very wide sphere of practice till August 1783, 

 when he removed to Worcester, in consequence of the death of his eldest son Dr. James Johnstone, 

 who was carried oft' by a pestilential fever caught in attending prisoners lying ill of the fever in the 

 jail at Worcester. (See Howard on Lazarettos, p. 122.) Here Dr. J. continued to practise with 

 an activity unabated by age and infirmities until the time of his death ; which happened on the 28th 

 of April 1802. 



" In the catalogue of his private friends, he bad the honour to recount the names of men eminently 

 and deservedly distinguished for elegant taste, for classical erudition, and for deep researches into all 

 the various branches of philosophy, which are intimately or remotely connected with the study of 

 medicine. 



" As a practical physician. Dr. Johnstone w^as active and humane ; quick and sagacious in observ- 

 ing and deciding, he conformed exactly to the rule laid down by Hippocrates, and thus luminously 

 expressed by Celsus, mederi oportere, et communia et propna intuentem. His knowledge was at 

 once comprehensive and accurate. His application both to books and to professional duties was in- 

 tense, his memory was retentive, his penetration was keen, his judgment was correct, and his elo- 

 cution was ready, copious, and energetic. 



" In his moral carriage, he was firm and undeviafing ; but his vigorous and manly mind was per- 

 haps on some occasions too little accommodating to characters and to circumstances. In his temper 

 he was cheerful, though sometimes hasty ; in his conversation lively and instructive ; in his aflfections 

 warm and attached. In his domestic relations he was the best of fathers } his whole life was a sacri- 

 fice to the advantage of his children. In fine, as a public or a private man, his character has not 

 often been surpassed; and although the memory of his personal services cannot be soon forgotten, 

 yet has he erected a still more durable monument to his fame, in those various practical improve- 

 ments of the medical art, which rank his name among the benefactors of mankind." 



