392 



MR. S. M. JACOB ON 



Rain 



Fig. 13. 

 Hor. Scale 1 divn. = 2". 

 Ver. Scale 1 divn. = 5000 acres. 

 Diagram showing the distribution of the total 

 unirrigated mature and crop (Rabi harvest) and 

 rainfall from 1887-8 to 1906-7, with the regression 

 lines for Sialkot Tahsil. 



Eqns. of the regression lines are : — 



(*') of crop on rain : y = i , i6i* + 6-200. 

 (**) of rain on crop : y = 2-918;*: — 0-217. 



j J— J 5—5 % 7 8 8 10 il « '» » W '" " 



Rain 



Fig. 14. 



Hor. Scale I divn. = 3". 

 Ver. Scale 1 divn. — 5000 acres. 

 Diagram showing the distribution of rain and 

 crop for the whole of Tahsil Zafarwal (Kharif har- 

 vests, 1887 — 1906). with the regression lines. 

 Eqns. of the regression lines are : — 

 (i) crop on rain: y = 3289^ + 6-381. 

 (ii) rain on crop: y = i'228#- 0-476. 



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Fig. 15. 

 Hor. Scale 1 divn. = 2". 

 Ver. Scale 1 divn. = 5000. 

 Diagram showing the distribution of rain and 

 crop for the whole of Zafarwal Tahsil unirrigated 

 areas in Rabi harvest from 1887-8 to 1906-7, with 

 the regression lines. 



Eqns. of the regression lines are : — 

 (i) crop on rain : y = 1/4326:*: + 5 - 529. 

 (ii) rain on crop : y = 3-357^ - 1-909. 



Fig. 16. 



Hor. Scale 1 divn. = 2". 

 Ver. Scale 1 divn. = 5000 acres. 

 Correlation of the matured area of crop in the 

 whole of Sialkot Tahsil, Rabi harvest, with the total 

 rainfall September to March for the year 1887-8 to 

 1906-7. 



Eqns. of the regression lines are : — 



(i) of crop on rain : y = 1-047^ + 4'944- 

 (ii) of rain on crop : y = 1-527* + 2-424. 



