ARTIFICIAL CAMPHOR. J3J 



a moderate fire. As foon as the contents begin to heat, the Red <ty e for 

 thread is put in and continually turned. It is requisite that the cotton$ • 

 thread fliould have been previoufly fteeped in water, and af- 

 terwards wrung, in order that it may be very equally penetrated 

 witli the colour. The thread is left in the bath till the liquor 

 boils, after which it is taken out, well waflied, the threads are 

 arranged on the hand, and the water prefled out. This firft 

 dyeing gives the thread a pale red colour. The boiler is then 

 emptied and again filled with water, into which another pound 

 of madder previoufly foaked in water is put, and this bath is 

 heated. As foon as it has become hot, the thread is put in and 

 boiled for one quarter of an hour. Care mud be taken that 

 the heal be not too flrong. The firft bath fliould fcarcely boil, 

 for fear the articles (hould take a brown colour ; but this incon- 

 venience is not to be feared in the fecond bath, when the thread 

 is already penetrated with a red colour. After the thread is 

 well waflied for the fecond time, it ought to have a deep 

 brown colour; if it has not it muft be again boiled with a 

 quarter of a pound of madder. After the lafl; dye, the thread 

 is to be waflied by hand in hot foap water, after having waflied 

 it in cold water, and it is then to be dried. 



XV. 



Report on an artificial Production of Camphor, announced by 

 M. Kind. Read to the Society of Pharmacy by Bou llay.* 



Bl 



EING charged, in conjunction with M. M. Cluzel and 



Chomet, to give an account to the Society of an interefting 



phenomenon announced by M. Kind, in Trommfdorff's Journal 



de Pharmacie, extracted and reported in the 1 4th number of 



the Journal de Phyfique et de Chimie, publifhed by Van Mons, I 



now inform them of the refult of our labours. 



" For the purpofe of procuring the arthritic liquor of Pott,M. Kind's 



which is prefcribed here with advantage, for refolving the no-^ 6 "^!:.^ 



dofities and other obftinate tumours which form upon the joints, of camphor by 



I intended," fays M. Kind, " to incorporate the muriatic eas Commo ? oil of 

 J r o turpentine to 



abforb muriatic 

 * From Annales de Chimie, Fruaidor, No. 153. Vol. LI. gas, 



K 2 with 



