322 



METEOEOLOGY. 



Adjustment of temperature for Washington, Summer 1857. 



Obs. 



Assumerl eq. of 

 conilition. 



— IS.S = — ?, y + 5 z 



— 3.3 = — 2 1/ 



+ G.9 = — 1 y — 3 z 



+ 13.0 = — 4 z 



+ 92 = +:;/ — S^r _ 



+ 2.8 = + 2 1/ 



— 10.0 = -f 3 ij + 5 



Normal Eq. 

 ~ .i7.9 = 20 a- 

 + 17.3 =l-iy 



57.9 



Solution. 

 z = — 'Z. 

 ?/ = +!■ 

 X = 75. 



Washington, Summer, 75°. ^ F. -j- 1. 4 m — 2. 90 nj^ _j- qo. 5. 



•April. 



+ 75 3 



— 4.2 



— 26.1 



+ 45.0 

 Kc^id'ls— 

 — 0.1 



May. 



+ 75.3 

 _ 2.8 

 — 11.6 



75.3 

 1.4 

 2.9 



+ 60.9 + 71.0 

 — 0.5 — 0.4 



July. 



+ 75.3 



+ 1-4 

 — 2.9 



+ 75.3 

 + 1.4 



+ 73.8 

 — 0.9 



Sept. 



+ 753 

 + 2.8 

 — 11.6 



+ 66.5 

 0.0 



Oct. 



Sum of Resid. 



+ 75.3 

 + 4.2 

 — 26.1 



+ 53.4 

 + 0.3 



— 1.9 



3.3:6 = 0..5 

 O.ll 



± 0.4 



Mean. 

 1.4:5.8 = 0.24 

 24 30 



7,2 

 15.5 



23tli 



Blaximum y tonip, July 23, 75°. 4 

 75.3 

 + 0.3 

 — 0.2 



75.4 



For comparison — 



The summer of Naples Lat. 40°. 9 



Rome 41.9 



Const uitinople 



Petersburg.... .59.8 61.7+ 0.9 7n 



Savannah..... 32.1 80.2+ 0.6 Jft 



°.0 + 1.3 TO— 1.75 TO= + 0.7 



3.9 + 1 3 JM — 1.69 m" ± 0.7 



7.7+ 1.3 m— 2.05 m^ + 1.5 



2.70 m" + 0.8 



1.28 m» ± 0.7 



