METEOROLO GICA L OB SEE VA TIONS. 



113 



account of the low temperature and moisture of the atmosphere. These 

 phenomena in the movement of the isothermal upon diseases are a con- 

 stant attendant in our sanitary climatology, and is the physical law 

 which seems to govern diseases that are subject to climatic influences. 



Perhaps no subject opens for investigation to the intelligent phy- 

 sician a more pleasant study than this of the geographical limitation of 

 disease. Like the studies of natural history — the foundation upon which 

 rests the beautiful structure of the medical art — it each day present 

 something new and interesting within the thought and observation of its 

 most humble student; and could each one take and reduce sanitary 

 observations to a system, it would be a source of gratification to himself, 

 and his record of disease and mortality, when compared with others, 

 would be one of the links needed in the statistics of a sanitary clima- 

 tology. 



9. MONTHLY BAKOMETRICAL EESULTS FOR THE YEAR 1866. 



MONTH. 



Maxi- 

 mum 

 height. 



Date. 



Mini- 

 mum 

 height. 



Date. 



Mean 



lieight for 



the month. 



Range 



for 

 month. 



Greatest 



daily 

 variation 



Date. 



Least 



daily 



variation 



Date. 



January 



February . . . 



March 



April 



May 



June 



July 



August 



September . . 



October 



November . . . 

 December . . . 



Year 



30.42 

 29.86 

 29.69 

 29.59 

 29.48 

 29.52 

 29.50 

 29.55 

 29.54 

 29.79 

 29.91 

 29.80 



8 

 26 

 27 



6 



7 

 11 



9 

 16 

 15 

 16 



5 

 20 



28.85 

 28.94 

 28.80 

 28.79 

 28.57 

 28.82 

 28.02 

 29.95 

 28.95 

 28.94 

 28.83 

 28.59 



15 

 19 

 31 

 23 

 27 

 18 

 4 

 8 

 11 

 20 

 10 

 23 



29.432 

 29.384 

 29.383 

 29.392 

 29.186 

 29.214 

 29.318 

 29.285 

 29.309 

 29.358 

 29.316 

 29.300 



1.57 

 0.92 

 0.89 

 0.80 

 0.91 

 0.70 

 0.48 

 0.60 

 0.59 

 0.85 

 1.08 

 1.21 



.06 

 .38 

 .46 

 .03 

 .02 

 .22 

 !25 

 .03 

 .23 

 .22 

 .39 

 .32 



15 



15 



21 



5 



21 



3 



4 



8 



12 



22 



10 



4 



.03 

 .02 

 .03 

 .00 

 .00 

 .00 

 .00 

 .01 

 .01 

 .02 

 .02 

 .01 



3 

 28 

 19 

 11 

 23 



1 

 10 

 27 

 29 



5 

 26 

 29 



30.42 





28.02 





29.314 



2.40 



.46 





.00 





10. ANNUAL BAROMETRICAL RESULTS FOR THE YEARS 1860-1866. 



YEAR. 



Maximum 



Minimum 



height. 



height. 



30.42 



28.02 



29.83 



28.61 



29.85 



28.58 



29.81 



28.47 



29.83 



28.77 



29.90 



- 28.88 



29.87 



28.94 



Mean height 



for 



the year. 



Mean 



monthly 



range. 



Greatest 



daily- 

 variation. 



Least 



dally 



variation. 



1866 

 1865 

 1864 

 1863 

 1862 

 1861 

 1860 



29.314 

 29.350 

 29.236 

 29.280 

 29.297 

 29.354 

 29.330 



.883 

 .715 

 .750 

 .880 

 .720 

 .630 

 .680 



.46 

 .62 

 .47 

 .75 

 .57 

 .66 

 .61 



.00 

 .01 

 .00 

 .00 

 .00 

 .00 

 .00 



Mean barometer for 7 years, 29.308. 



Cab. Nat. 15 



