On the manufacturing of some Oxides of Mercury. ] C3 



ricana fiava. In inquiring the symptoms I committed a 

 fault ; tor, instead of waiting for his answer, I said, " Were 

 they not so and so?" And all his answers were in the at- 

 firmalive. I need hardly remark, that on our arrival here 

 we differed one day in our reckoning: to us on board the 

 ship it was Sunday ; on shore it was Monday. 



XTX. Extract from a Memoir rf M. Paysse, principal 

 Preparer of Medicines at the Camp of Ulrer/if, on the 

 manufacturing, on a large Scale, of some Oxides of 

 Mercury. By M. Parmhntieu *. 



jyi. Payssf., to whom wc are indebted for the following 

 information, in regard lo the manner in which the Dutch 

 prepare, on a large scale, red sulphurated oxide of mercury 

 and red oxide of mercury by nitric acid, does not lose a 

 moment to take advantage of his stav in Batavia. He seizes 

 cverv opportunity of visiliug the manufactories, so nume- 

 rous in that country, as well as the cabinets of the curiout;, 

 which may contribute towards his instruction. The diffi- 

 culties of every kind which he encountered before he could 

 get admission lo these manufactories are a sufficient proof 

 of his ardent zeal for the arts and sciences ; but amidst the 

 disappointments which the traveller experiences on his route 

 while making researches, he often ol)tains an indemnity for 

 the care he takes, and the sacrifices he makes, when he is so 

 happy as to meet with any objects proper for seconding the 

 desire he has to add to his knowledge, and to enrich his 

 country with the discoveries of the industrious nations he 

 is so fortunate as to visit. Such is the advantageous situa- 

 tion of Al. Paysse, who has already procured us detached 

 information in regard to many interesting objects. The 

 reader will easily form an opinion of them from the follow- 

 ing extract from the laist memoir addressed to me by this 

 clieniist. 



Red sulphurated Oxide of Mercury (Cinnabar). 



This matter is prepared only in two manufactories at 

 Amsterdam. 'I"he most considerable is tliat wliich belonged 

 to the late M. Brand. M. Paysse assisted at an operation 

 in which SOO pounds were prepared, divided into two por- 

 tions. He observed all the details with every possible at- 



• From the- /InJtn'a r!c Chimic, No. 152. 



tcntiou J 



