202 



TABLES AND RESULTS OF THE PRECIPITATION, 



Type VII. — Mississippi, Delta, and Gulf Coast of Alabama and Mississippi; New Orleans, Baton 

 Rouge, Mount Vernon Arsenal. 



Characteristics : Two maxima, the principal one about the end of July, the secondary one early in December, and 

 a principal minimum early in October. Towards the end of April there occurs a secondary minimum, 

 moderate. 





1 



c 



bo 







-^ 2 



S-3 S2 



-^F 



Mean 



Month. 



o 2 





1^ 



of 3 



Stations. 



January 



i.o6 



I. 21 



1. 01 



1.09 



February 



•79 



1.02 



.84 



.89 



March 



.91 



■94 



.87 



.91 



April 



.86 



.78 



•85 



•83 



May 



.90 



.72 



1. 00 



.87 



June 



1.06 



1. 12 



1. 01 



1.06 



J"iy 



1-57 



1.20 



I-3S 



1-37 



August 



1-35 



I-3I 



1-34 



1-33 



September 



.87 



.68 



.70 



•75 



October 



•73 



.72 



•58 



.68 



November 



.96 



1.24 



1.20 



1-13 



December 



.96 



1.06 



1.25 



1.09 



The above type-curve depends upon a short series of observations, but the three 

 curves agree remarkably well, excepting the non-appearance of a subordinate mini- 

 mum at the Alabama station in February. This type is intermediate between 

 Types VI and VIII. 



Type VIII. — Southeastern Coast of the United States. Virginia to Florida. 



Characteristics : One principal maximiim, late in July or early in August, with two small adjacent minima, about 

 the middle of April and late in October. The subordinate maxima occur in March and December. Range, 

 very large. 









■i 





J 







oj" !" C 



■a 



■3 ,A 



-§ 2 



°oi M 



ean 



Month. 



" £ S 1 



S 





c g 



w S 



of 













1- sst 



ations. 























^ 



Cfi 







January 



.86 



6s 



.68 



.72 



•SI 



68 



February 



.70 



73 



.66 



•63 



.66 



68 



March 



•S5 



go 



1. 10 



.92 



.72 



90 



April 



.76 



48 



.46 



•5° 



•38 



S2 



May 



•99 



95 



1. 01 



1.22 



.68 



97 



June 



1. 10 I 



16 



1. 14 



1-13 



I-S3 1 



21 



July 



1.36 I 



63 



1.69 



1. 91 



2.60 I 



84 



August 



1.44 I 



93 



2.02 



2.07 



2.14 I 



92 



September 



1. 19 I 



42 



1.29 



'•IS 



1.24 I 



26 



October 



•74 



79 



•56 



•56 



•49 



63 



November 



.84 



SS 



•S6 



• 44 



•43 



S6 



December 



1. 17 



Si 



•S3 



•74 



.61 



83 



The aggregate number of years used in forming the type-curve is 118. The 

 individual curves exhibit well the characteristic summer maximum ; the other features 

 partake of more or less variations. That the central maximum of the three maxima 



