512 PHlt6^bi»OTCAt fftXii'SAiCtTdKfe. [anNO I76O. 



had used it all in 3 days; and then coming to hini for more, he found his hands 

 still continue to mend ; the skin that had grown hard scaling off, and a new 

 flexible one appearing underneath ; the chaps were many of them healed ; and he 

 began to have some use of his fingers. Encouraged by this success, he con- 

 tinued the use of the last prescribed liniment; and as from his not having had 

 the proper use of his fingers for so long a time, their joints in a great degree 

 lost their motion, he advised him alternately to clench his fist, and to stretch out 

 his fingers many times a day. 



The disorder had been so long on him, and had taken so deep root, that 

 though he began very sensibly to amend from the first application of the lini- 

 ment, yet it was full 2 months before he thought it advisable to leave off the 

 use of it; and then to prevent a relapse he gave him the following ointment : 

 R Axung. porcin. §ii. Vitel. ovi. Ol. lavend. gt. v. f. unguentum. with orders to 

 anoint hi« hands with it every night going to bed. This ointment he had con- 

 tinued to use about a month ; and was then perfectly restored to the use of his 

 hands, and began again to work at his business. During this course of anoint- 

 ing he took no internal medicines, except 3 doses of purging physic. 



LXXXV. A Further Account of some Experiments made on the Bovey Coal. 



By Dr. Miller, p. 94 1. 



Salt of hartshorn mixed with the phlegm that distilled first fi-om the Bovey 

 coal produced no ebullition nor air bubbles; but when mixed with the watery 

 liquor, which arose with the thick oil in the latter part of the process, after it 

 had stood some weeks in a glass bottle, close stopped, and was become perfectly 

 fine, caused a very considerable ebullition, and the mixture immediately became 

 foul and red. In some days after it got much thicker, and had the colour of 

 tar. lis surface was covered with a bituminous pellicle, as were the sides and 

 bottom of the glass. Eighteen grains of salt of hartshorn were not more than 

 sufiticient to saturate the acid salts contained in an ounce of the liquor, which 

 was but very little sour to the taste. 



Spirit of nitre dropped into this bituminous liquor, soon after it was distilled, 

 and before it had deposited the oily particles (which rendered it cloudy) changed 

 its colour to a deep brown ; but had not that effect after the liquor was become 

 transparent. 



The black gritty powder, which remained after the former process, was put 

 into a coated retort, and distilled by a naked fire; so that the whole body of the 

 retort continued red-hot for more than 2 hours. This brought over to the re- 

 ceiver near an oz. of a watery bituminous liquor, rather stronger than that which 

 distilled with a sand heat, and a few drops only of a thick bituminous matter, 

 which stuck to that part of the receiver on which they fell. The neck of the 



