revolving Double Stars, inserted in the fifth volume of the memoirs of 
the Royal Astronomical Society; the other to Professor De Candolle for 
his investigations in Vegetable Physiology as detailed in his work en- 
titled Physiologie végétale. 
I have the honor to be, Sir, 
Your most obed'. humble Servant 
Chas Konig, For. Sec. R. S. 
To 
The Secretary 
of the Imp. Acad. Naturae Curiosorum at 
Breslau. 
