120 Observations on the heavy Storm 



Contractor's consumption of Oil (and the same with Gas, 

 Naphtha, &c. in public Lanterns) in the Winter, and in the 

 Summer half-years, is very nearly in the proportion of 3 to 2 : 

 Strictly speaking, none other of his heads of Expemliture, differ 

 much from an equable rate, throughout the year, viz. Interest 

 upon, ai)d wear and tear of his dead Stock, with Cotton, and 

 Wages to his Lamp- lighters : hut as these uniform Expenses, 

 have been said, by experienced Contractors, not to exceed 10 per 

 cent, or Vo^'i P''^'"'^ ^^ ^''^ whole of the Contractor's Expenses, 

 including Oil, the proportions of -f-ths and -f-ths, in the Winter and 

 the Summer Half-years, or -j-V^hs in each of the Winter Quartei-s, 

 and T^ths in each of the Summer Quarters, seem proper propor- 

 tions, which the Contractor might draw Money, on Account of the 

 Annual Sum contracted for; or according to which, any single 

 Quarter might be separately paid for: and with considerably less 

 unfairness to either party, than either, simply taking |th of the 

 yearly sum, as applicable to each Quarter, and \ thereof for each 

 liaif-year, as is very commonly donej or than, taking frds and 

 ■jrd, as the proportions of the Winter and the Summer half-years, 

 ab is said to have been contended for, lately, by a Contractor. 



1 am your obedient servant, 

 London, August 10, 1820. J. I. H. 



XVIIL Some Obsfrvationi made at Clapham Common, Surrey, 

 on the beiiify Storm thai took place on the Night oj Sunday 

 the '6i)lh of July 1820. 



To Mr. Tilloch. 



Sill, — IJ-AVING for severa] years paid some little attention to 

 in^tcorologv, keepinjij a daily journal, and recording at stated 

 hours the pressure and temperature, as well as the general ap- 

 pearance of the atmosphere, you will readily imagine the ex- 

 tremely interesting storm that took place on the 30th of las: 

 month arrested my attention. 



If the inclosed observations on the same should meet your ap- 

 probation, and be deemed worthy an insertion in y«ur valuable 

 Magazine, your making use of them in that way might possibly 

 be gratifying to some engnged in similar pursuits, and would at 

 the same time oblige a constant reader. 



Yours very respectfully, 

 C'lapiiam Comtnon, Aug. 21, 1820. PkilouIL'S. 



P. S. — In the inclosed account, no notice has been taken of t!.e 

 •el^ei'li of this storm. «mccJvin^ nucb information to be ai- readih . 



ai'd 



