214 ON THE EFFECTING OF 



removal to more genial latitudes, forms alone a topic for 

 consideration of much interest. The migration of birds 

 and other animals to high northern latitudes, their habits 

 and pursuits in such situations as they frequent, their periods 

 of return southward, or emigration in other directions, 

 furnish the mind with store for valuable reflection. All 

 these points are comprised, and recorded as they occurred, 

 in the Journal just submitted to the notice of the reader. 



The latter description of reader has now laid before him 

 for investigation a mass of facts in natural history, important 

 in many points of view. To philosophic research I leave 

 such inquiry, and the useful application of the results, in 

 the hope that, from the heap, some deduction may be 

 drawn of importance in the concerns of science and of 

 mankind. Neither am I, in this regard, actuated by a 

 desire to arrogate to myself any merit for furnishing those 

 facts. It was my good fortune to find that the motives 

 which urged me into those high latitudes were rewarded by 

 having presented to my view many appearances in nature 

 which were quite new to my observation ; and if they appear 

 so to others, and prove of any benefit to society, my gratifi- 

 cation will be multiplied. 



Some atmospheric phenomena, such for instance as are 

 recorded in the preceding Journal, have not, in the extent 

 of my reading, come previously within my knowledge ; 

 and particularly that of the cirrous radiation, Avhich bears 



