52 REPORT OF THE SECRETARY. 



Lectures. — The following lectures were delivered during the winter 

 of 1859-'60: 



Six lectures by Professor Samuel W. Johnson, of Yale College, on 

 Agricultural Chemistry: 



1. The Plant, its Structure and Composition. 



2. The Atmosphere and Water in their relation to Vegetable 

 Growth. 



3. The Soil, as related to Agricultural Productions. 



4. The Improvement of the Soil by Tillage, Drainage, Amendments, 

 and Fertilizers. 



5. The Conversion of Vegetable into Animal Produce. 



6. Systems of Farm Practice Viewed in the Light of Agricultural 

 Science; Eotation of Crops; Exhaustion and Maintenance of Agricul- 

 tural Eesources. 



Three lectures by Philip P. Carpenter, esq., of England: 



1. Shells of the Gulf of California. 



2. The Cuttle Fish Tribe, their Forms and Habits in the Ancient 

 and Existing Seas; including the Paper and Pearly Nautilus, &c. 



3. Crawling Shells. 



One lecture by Professor Henry Coppee, of the University of 

 Pennsylvania, on Coincidences in the Conquests of Mexico. 



Four lectures by Professor Benjamin Peirce, of Harvard College, 

 Cambridge, Massachusetts : 



Two on The Diversities in Mathematical Powers of Different Races 

 and Nationalities; 



Two on Comets. 



Three lectures by Dr. Benjamin A. Gould, of Cambridge, Massa- 

 -ehusetts, on Chance, Probability, Accident. 



Three lectures by Professor A. T. Bledsoe, of the University of 

 'Virginia, on The Social Destiny of Man. 



Three lectures by the Rt. Rev. M. J. Spaulding, Bishop of Louis- 

 wille, Kentucky, on The Elements and History of Modern Civilization. 



One lecture by William Gilpin, esq., of Missouri, on The Charac- 

 teristics and Physical Geography of the Western Portion of North 

 America. 



Five lectures by T. Sterry Hunt, F. R. S., of the Geological Survey 

 of Canada: 



1. On Chemical and Physical Geology; Introduction of Geological 

 Agencies. 



