ON THE SEASONAL VARIATIONS OF TEMPERATUKE. 



45 



and records of river teinj)erature extending over several years were 

 offered by some previous observers. Amongst these Mr. Chapman, of 

 Magdalen College, Oxford, has offered observations on the Cherwell ; Mr. 

 John Hunter, of Belper, on the Derbyshire Derwent ; Mr. F. C. Bayard, 

 on the Wandle ; and Mr. N. Whitely, of Truro, on the Allen. 



The form of thermometer employed is described in last year's report. 

 The instructions issued to observers are given as an appendix to the pre- 

 sent report. 



The observers at work for the Committee now are : — 



