452 New Publications. 



tion takes place this year at Plymouth, and will occupy the 

 week commencing Monday July 12. 



8. Congres Scientifique de France. — The ninth meeting of 

 this Association, which, in its plan and objects, resembles the 

 British Association for the Advancement of Science, will he 

 held at Lyons, and will occupy twelve days. The session will 

 open on Wednesday September 1. 1841, in the great hall 

 of the Palais des Terreaux. The Association will be particu- 

 larly gratified by the attendance of men attached to Science, 

 Literature, and the Arts from the British Isles. 



NEW PUBLICATIONS. 



Three Lectures on Agriculture, delivered at Oxford during the year 1841, in 

 which the Chemical Operation of Manure is particularly considered, and the 

 Scientific Principles explained upon which their efficacy appears to depend. 

 By Charles Daubeny, M.D., F.E.S., &c, Sibthorpian Professor of Eural 

 Economy in the University of Oxford. London, John Murray ; and 

 Oxford, J. H. Parker. 8vo. Pp. 10G. 1841. 



The following is a summary of the contents of these inte- 

 resting Lectures : — 



Lecture I. — Value of scientific knowledge in agriculture. — Immense na- 

 tional gain accruing from the smallest agricultural improvement. — Uses of 

 botany and vegetable physiology in agriculture. — Uses of chemical know- 

 ledge in the same — For determining the origin of the elementary principles 

 which enter into the composition of vegetables — For the preservation of 

 animal manures — For discriminating the mode of their action upon plants — 

 For ascertaining the cause of the exhaustion of soils. — Other lines of re- 

 search interesting to the agriculturist upon which chemistry may throw 

 light. — Concluding remarks. 



Lecture II. — On the scientific principles by which the application of 

 manures ought to be regulated. — Plan of cultivation adopted by the first 

 settlers in a new country at the present time. — Distinction between prairies 

 and wood-lands. — Similar method of culture pursued by the early colonists 

 of antiquity. — Fallowing, when first resorted to. — Manuring, first noticed by 

 Homer. — Rotation of crops, how far practised by the Romans. — Improve- 

 ments introduced in modern times. — Increased productiveness of the soil 

 since the time of Queen Elizabeth, as shewn by the growth of population. — 

 Imperfections of our present knowledge with respect to the principles of 

 husbandly. — Source of the various elementary bodies which enter into the 



