THE AIR OF TOWNS. 



387 



APPENDIX II. 



I have registered by a well-known method s the total daylight on a spot on Wood- 

 house Moor (a high open moor lying to the northwest of the town) nearly every day 

 during the months November, 1895, to February, 1896. The same has been done at 

 the Philosophical Hall (near the center of the town) and at Kirkstall Road t (a busy 

 manufacturing center). In the latter place the smoke absorbs about one-quarter of 

 the total daylight. The following are the results obtained. To economize space tho 

 results for each week are added together : 



Light testa. 

 A comparison of the total daylight in different parts of Leeds. 



Tear 1895-96. 



"Woodhouse Philosophical 

 Moor. Hall. 



i 



Kirkstall 

 Road. 



July 1-7 



July 8 14 



Not recorded. ' 78.30 

 Not recorded. 88. 30 

 Not recorded. . 61. 70 

 Not recorded. 65 30 



1 



83.60 

 60.60 

 riS r.n 



July 15 21 



July 22 28 



Nov. 10 16 



22.94 

 15.92 

 10.20 





Nov. 17 23 



Not recorded. 



12.25 



6.10 

 10.34 

 7.17 

 3.53 

 1.53 

 2.51 

 5.51 

 5.47 

 8.04 

 *7. 58 j 

 * 10. 57 

 3.26 I 

 i 



Nov. 24-30 



Dec. 1-7 



10.90 "N"nt, recorded. 



Dec. 8-14 



Dec. 15-21 



Dec. 29-Jan. 4 



Jan. 5-11 



Jan. 12-18 



Jan. 19-2 5 



Jan. 26-Feb. 1 



Feb. 2-8 



Feb. 9-15 



Feb. 16-22 



18.30 

 4.50 

 2.60 

 4. 05 

 7.88 

 8.17 



13. 66 

 6.56 

 8.28 

 3.82 



Not recorded. 



* 4. 80 

 1.99 

 2.32 

 5.60 

 5.90 

 9.02 



* 7. 20 



* 9. 05 



* 4. 40 



* The six numbers marked with an asterisk are exceptions to the general rule. For some unex- 

 plained reason, the amount of light registered on these dates is greater in the smokier parts of the 

 town than on the open moor. 



* The method used was to estimate tho amount of iodine liberated on exposure 

 from a mixture of potassium oxide and sulphuric acid. The numbers represent 

 cubic centimeters of thiosulphate solution used. 



tThe position would be a little to the left of the center of the view shown in the 

 photograph of Leeds. 



