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315 Preserving SUBJECTS in SPIRITS. 



fine parts could fly ofF. He fays, nut oil, thickened to 

 the confiftence of honey, by a long expofure to the air 

 which will give it weight fufficient to fmk in a weak fpi- 

 rit, may fupply the place of mercury. 



The fccond method is, for bottles that have not glafs 

 ftoppers for vv^hich he recommends a layer, of about two 

 lines thicknefs on the infide of the bladder, which is to 

 cover the mouth of the bottle, of nut oil prepared as before 

 direded, and when the bladder is well tied on, the bottle 

 may be reverfed vvithout any hazard, but great care muft 



be had to wipe the edge of the bottle very dry, that the oil 



may adhere to it in every part. As many bottles will 

 not ftand on their mouths, Mr. de Reamniir direds their 

 being placed in wooden cups, turned with abroad bottouT 

 and a hollow, fufficient to receive the neck of the bottle. 



Thefe two methods, though well calculated to anfwcr 

 the end propofed, have fome inconveniencies. In the firft 

 the bottles muft be defignedly made for this ufe and of 

 flint, that the fl:oppers may be ground into them, which, 

 with the coft; of the mercury, is a confiderablc expence, be- 

 fides the difficulty pcrfons at a diftance from a glafs houfe -vill 

 find, in procuring them. Inthefecond, preparing oil, lo that 

 it may thicken to confiftence of honey, is a work of years, 

 the operations may be much fhortcned, by putting the oil 



about two lines thicknefs in leaden vcflels, as that metal 



has a confiderablc efl'ed on the oil, which may by this 

 means be fufficiently prepared in three or four months. 



After feveral experiments, I found two methods free 

 from the above inconveniencies, and which I have great 

 reafon to think will anfwcr the purpofe fully from four or 

 five years experience. 



The firft method has fome affinity with Mr. de Reau^ 

 mur\ and is as follows. When the fubjed and fpirits are 

 put into the bottle, carefully wipe the infide of the neck 

 and edge till quite dry, prepare fome thin putty, of the 

 confiftence of foft ointment, and put a coat of it about a 

 line or two thick on the fide of the bladder or leather, 



which 



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