240 NOTICES AND C0RRE8P0KDENTS. 



This condition is essential, because the author presumes he 

 could otherwse enjploy his time and labours with more ad- 

 vantage to himself, and the public. Farther information 

 may be had ar the laboratory, where several thousand models, 

 both solid and dissected, are ready for inspection. 



I am. Sir, 



Your obliged servant, 



FREDERICK ACCUM. 



Old Compton Street, Soko, 

 October 25th, 1812. 



Queries. By Inquisitor. 



To Mr. Nicholson. 

 SIR, 



THE following queries are submitted to the scientific eye of 

 vjuciico MI iia- *^^® perusers of your Journal, and an answer solicited by 



turai history. INQUISITOR. 



Queries — Is there a species of lichen, or of any other crypto- 

 gam in plant, in the form of a powder, of a light azure colour ? 

 Or do the ova of any insect, or the insects themselves, exhibit 

 this appearance ? 



Where is the description of such plant or insect to be found ? 



0::f=For want of room, the accounts o/Kirchoff'sdiscirery of a process for 

 converting starch into sugar ; with the experiments and inductions of other 

 chemists, are deferred to our next. 



Dr. Pearson's reply to Dr. Marcet came too late for the present month. 



The communication and drawing f cm Mrs. Ibbetson came duly t* 

 hand, and uill be published in our next numlcr. 



ERRATA IN THE LAST NUMBER, 



P. L. 



146 18 For " rectrJJled" read rectijied. 



27 " fl^ij to fl^iv" fl^ijtofl^iv. 



