a Meteorological Journal kept at Carlisle. 423 



In an abstract of the Journal for 1801 *, which was the first 

 year of this series, Mr PITT states, that " the barometer and 

 thermometer used in keeping this Journal was made by Messrs 

 JONES, Holborn, London. The barometer is of the Torricellian 

 construction ; its scale is not full inches, but something less, ow- 

 ing to the rising and falling of the surface of the reservoir ; the 

 nonius moves by a key, placed in front of the barometer, and it 

 has a floating-gauge, for the purpose of adjusting it to its proper 

 height. The thermometer is divided into half degrees, and is 

 properly graduated. The times of registering were 8 o'clock in 

 the morning, 1 at noon, and 10 at night in the winter months, 

 and half-past 7, half-past 1, and half- past 10 in summer. The 

 rain-gauge is a tin vessel ; the trunk is to the funnel as 9 to 1, and 

 has a floating-index to ascertain the quantity." At what time 

 he discontinued the use of these instruments, and began to use 

 the present ones, I have not been able to learn ; but I have no 

 doubt that he would take great care to have them constructed 

 and graduated in such a manner as not to affect the continuity 

 and correctness of his journals. Mr PITT, I know, was in the 

 habit of verifying the accuracy of the instruments he used, by 

 comparing them with other instruments made by the best artists. 



METEOROLOGICAL RESULTS. 



THE results of the Meteorological Journals for twenty-four 

 years, I have arranged into the subsequent Tables. To Mr 

 TAYLOR of Carlisle, I beg to express my obligation for his kind 

 assistance in calculating some of the averages. Should the Jovir- 



* Monthly Magazine, vol. xiii. p. 8. A brief abstract of the journal was pub- 

 lished annually in the Monthly Magazine. 



6 



