430 
PROCEEDINGS OF 
ORDER OF EXERCISES. 
Exercises of First Meeting , Monday Morning, April 1. 
The President of the United States presided. 
Prayer, by the Rev. C. M. Butler. 
Opening Address .—By John Tyler, President of the United 
States, and Patron of the Institute. 
Introductory Discourse .—By the Hon. Robert J. Walker, of the U. 
S. Senate. 
On the Physical Constitution of the Rays of the Sun .—Professor J. 
W. Draper, of New York. 
On the Great Comet of 1843 .—Professor Elias Loomis, of Ohio. 
Exercises of the Second Meeting , Tuesday, April 2. 
Hon. Levi Woodbury in the chair. 
Prayer, by the Rev. Mr. Sprole. 
On the Economy of Science in relation to the Government.— Rep, 
H. Humphreys, D. D., President of St. John’s College , Anna - 
• 
On the Liberation of Caloric in some Chemical Changes that are 
attended with an Enlargement of Bulk .—Professor Benjamin 
Hallowell , of Maryland. 
On the Gulf Stream.— Lieut. M. F. Maury, U. S. Navy. 
On the Dangers most to be guarded against in the Future Progress of 
the United States.— George Tucker, Professor of Moral Philo¬ 
sophy, University of Virginia. 
Exercises of the Third Meeting, Wednesday Morning, April 3. 
Rev. Dr. Humphreys in the chair. 
Prayer, by Dr. Humphreys. 
On the Past and Present State of Entomological Science in the United 
States.— Rev. John G . Morris, D. D., Baltimore. 
On the Attraction of a Planet upon a Material Point in Space.— 
Professor Richard S. McCulloh, Baltimore . 
