330 



DR R. E. SCORE SB Y- JACKSON 



January, the average mean temperature of those months which show an increased 

 mortahty with deficient moisture is below the average mean temperature of the 

 corresponding months whose humidity was greater. If this be worth anything, 

 it tends to corroborate a previous suggestion that dry cold is more fatal than 



humid cold. 



« 



On the Influence of certain Winds. 



We have no winds in this country which bear comparison, in point of inten- 

 sity, with such as are the bane of other lands. Of Siroccos, Harmattans, Simooms, 

 Samiels, Khamsins, or Solanos, we have none. But we have an east wind ; and 

 although it is by no means the prevalent wind of the country, nevertheless, from 

 its harshness, and from its evil influence upon certain classes of disease, it has 

 acquired a just notoriety. 



Table C. furnishes us with the following comparisons. The figures represent 

 the average number of days on which the different winds blew. 



Section. 



N. 



N.E. 



E. 



S.E. 



S. 



s.w. 



w. 



N.W. 



Calm 



or 



Variable. 



Mortality. 



Maximum, . 



Major, . . . 

 Minor, . . . 

 Minimum, . 



2-91 

 215 

 1-90 

 1-58 



2-22 

 2-00 

 202 



1-72 



300 

 317 

 303 

 300 



3-36 

 3-14 

 2-62 

 2-88 



3-09 

 2-80 

 286 

 3-28 



5-67 

 697 

 6-72 

 657 



5-13 

 5-44 

 6-22 

 6-33 



3-22 

 2-86 

 3-08 

 2-64 



1-90 

 258 

 2-12 

 2-58 



269-49 

 233-25 

 214-26 

 185-85 



Means, . . 



2-13 



1-99 



3-05 



3-00 



301 



6-23 



5-78 



2-95 



2-29 



225-71 



In the foregoing Table we have a general indication of a direct relationship 

 between mortality from all causes and winds from a point between N. and E., 

 and of an inverse relationship between mortality from all causes and winds from 

 a point between S. and W. The due E. wind shows little or no predominance in 

 any one section more than another. The S E. wind shows a tendency to blow 

 directly as the mortality, but not uniformly through all the four sections. The 

 due S. wind, with the exception of the first section, blows inversely as the mor- 

 tality. The N.W. wind affords no determinate relationship. With respect to the 

 number of calm days, or days on which the wind was so light and changeable 

 as to afford no fixed direction, all that can be said is, that there are fewest of 

 such days in the maximum section. 



As it would require too much space to compare the relative frequency of the 

 different winds with the death-rate month by month, it must suffice to do so 

 year by year. This is done in the following Table, in which the average mor- 

 tality of the years with the greatest number of days of each wind is compared 

 with the average mortality of the years with the fewest days of each wind : — 



