Of making the TTER of ROSES, 13 



repeated for fome fucceflive evenings, or while any of this fine 

 eflential oil rifes to the furface of the water. 



JV. B. I have been informed that fome few drops of this ef- 

 fential oil have been more than once collected by diflillation, in 

 the fame manner as the eflential oils of other plants here in 

 London. I am, 



S I R, 



Your moft obedient humble fervant, 



D. Monro. 



III. 



