28 



FREER. 



Table VI. — Washington, D. C. 



Months. 



Aver- 

 age. 



Maximum. 



Minimum. 



Mean 

 maximum. 



Mean 

 minimum. 



Remarks. 



Clear days. 



1910. 



9.91 

 11.19 

 10.37 

 11.88 

 12.91 

 11.29 

 11.51 



12.97 

 15.01 

 1L96 

 13.09 



12.70 

 15.60 

 15.75 

 19.14 

 16.66 

 17.33 

 15.85 



16.42. 

 20.34 

 12.63 

 13.48 



6.54 

 1.70 

 1.85 

 3.83 

 4.37 

 3.54 

 5.00 



9.52 

 9.66 

 11.29 

 12.32 



11.55 

 12.80 

 12.75 

 13.49 

 15.05 

 14.38 

 14.15 



14.77 

 20.07 

 12.63 

 13.48 



7.18 

 7.19 

 6.81 

 8.37 

 10.16 

 8.82 

 9.27 



11.53 

 11.64 

 11.29 

 12.32 





5 out of 8. 

 10 out of 14. 

 8 out of 10. 

 10 out of 18. 

 14 out of 16. 

 4 out of 9. 

 8 out of 11. 



8 out of 9. 

 4 out of 5. 

 3 out of 3. 



7 out of 7. 



July 





August 



September,.. 



October 



November 



December 



1911. 



January 



February 



March 









With temper- 

 ■ ature coef- 

 ficient. 





Average.. 

 May 



11.96 



15.99 



6.33 



14.10 



9.50 



With our solu- 

 tion. 



7.21 



8.21 



5.72 



7.92 



6.27 





Table VII. — Khartoum, Egypt. 



Months. 



Average. 



Maximum. 



Minimum. 



Mean 

 maximum. 



Mean 

 minimum. 



Maximum 

 temper- 

 ature. 



Clear day». 



1911. 



September 



October 



17.4 

 17.8 

 17.4 



19.6 

 20.8 

 17.8 



14.8 

 16.1 



16.7 



17.8 

 18.7 

 17.7 



16.5 

 17.3 

 17.0 



40.2 

 38.9 

 35.4 



12 out of 22. 

 22 out of 31. 

 10 out of 13. 



November 



Average .. 



17.5 



19.4 



15.8 



18.1 



16.9 



38.1 



Table VIII. — Baguio. Rate for one hour. 



Months. 



Aver- 

 age. 



Maxi- 

 mum. 



Mini- 

 mum. 



Mean 

 maxi- 

 mum. 



Mean 

 mini- 

 mum. 



Observa- 

 tory ther- 

 mometer 

 readings. 



Black- 

 bulb 

 readings. 



Clear day*. 



1911. 



12.5 

 16.1 

 16.2 

 11.9 



18.7 

 20.6 

 19.4 

 16.7 



6.9 

 8.3 

 11.1 

 7.1 



16.2 

 17.9 



17.7 



8.2 

 12.1 

 14.0 







5 out of 13. 

 3 out of 19. 



April 



27.3 

 27.5 



51.2 

 51.4 



May 





Average 









14.2 



18.8 



8.3 



17.1 



11.4 











