Published by the same Authors. 
By Mr. Kirby, 
MONOGRAPHIA APUM ANGLIC : 
Or, An Attempt to divide into their natural Genera and Fami- 
lies such Species of the Linnean Genus Apis as have been 
discovered in England. In two volumes 8vo, with plates. 
Price 11. Is. 
By Mr. Spence, 
In one closely printed Volume, 8vo, price 7s. Boards, 
TRACTS on POLITICAL ECONOMY, viz. 
1. Britain independent of Commerce. Seventh Edition. 
2. Agriculture the Source of the Wealth of Britain. Third 
Edition. 
3. The Objections against the Corn Bill refuted. Fifth 
Edition. 
4. Speech on the East India Trade. With Prefatory Re- 
marks on the Cause and Cure of our Present Dis- 
tresses, as originating from Neglect of Principles laid 
down in these Works. 
