10 [February, 1S44. 



of coking the coal, a considerably greater amount of volatile matter is expelled 

 than when a slow application of heat gradually drives off the matter volatilizable 

 by that principle alone. 



The Chairman announced to the meeting the recent de- 

 cease (on the 10th inst.) of Dr. M. Burrough, late a member 

 of this Institution, and one of its most zealous and active 

 friends, and a large contributor to its collections in all the de- 

 partments of Natural Science. 



Whereupon the following Resol utions, presented by Pro- 

 fessor Johnson, were unanimously adopted: 



Resolved, That the members of this Academy have heard 

 with unfeigned regret of the decease^of our late valued and 

 highly respected member, Dr. Marmaduke Burrough, whose 

 zeal in the cause of JNatural Science, persevering industry in 

 the prosecution of its various departments, and deep interest 

 in the welfare of this Institution, have laid it under numerous 

 and lasting obligations to our deceased associate. 



Resolved, That the members of this Academy deplore the 

 loss of Dr. Burrough, not only as the ardent prosecutor of 

 scientific researches, but as the undeviating man of honor, 

 and highly accomplished gentleman. 



Resolved, That the Vice President of this Society, Dr. 

 S. G. Morton, be requested to communicate to the family of 

 the deceased a copy of the foregoing Resolutions. 



Stated Meeting, February 20, 1S44. 

 Mr. Ltjkens in the Chair. 

 A communication was read from the American Philosoph. 

 Society, acknowledging the receipt of Nos. 32, 33 of the Pro- 

 ceedings. 



A letter was read from the Rev. John G. Morris, D. D., of 

 Baltimore, dated February 19, 1844, acknowledging the re- 

 ception of his notice of election as a Correspondent. 



