[ *35 D 
c< Of the tubes one contains flowers ot iulphun 
C£ this was fent me from Drefden by Mr. Haubold, 
££ mathematician and geographer to the king of Po« 
£c land. It is the fame fort with one, with which 
££ that gentleman die wed the late Count Saxe the 
<f penetration of the fulphureous odour, when he 
££ was laft year at Drefden. In another I have in- 
£? eluded balfam of Peru, mixed with powder’d chalk. 
u In the third, opobalfamum ; and in the fourth, 
<c lpirjt of wine with chalk. 
u The larger globe contains opobalfamum, and 
cc the fmaller beaten cinnamon. 
£C In making ufe of the globe with cinnamon, 
cc this method is to be obferved. After that, from 
££ the rotation againfl the hand or a rubber, the 
£C globe is warmed, let the motion be difeonti- 
££ nued. After this difcontinuance, let the hand 
u be immediately applied to the globe, and the nofe 
£C of any perfon, who is willing to make the trial, is 
£C to be held within an inch or two thereof; and the 
a rotation to be repeated by little and little, and to 
£C be made flowly. In this repeated and gentle ro- 
££ tation the obferver will perceive the agreeable va- 
u pour of cinnamon ; but this vapour quickly va- 
£ ‘ nifties upon continuing the rotation. It is there- 
a fore neceftary, that, as foon as the globe is heated 
£C again, the rotation fhould be flopped, and be be- 
a gun again by little and little, when, upon the firlb 
££ turn of the globe, the exhalation of the cinnamon 
£c will be perceived. And this may be repeated as often 
u as you pleale, only obferving, as often as the globe is 
Cc heated, that after a fhort refpite you begin the ro- 
££ tation of the globe in a very gentle manner. 
G g 2 £< I beg 
