CEREAL INVESTIGATIONS ON THE BELLE FOURCHE FARM. 5 
precipitation (March to July, inclusive) for the same years varied 
from 2.01 to 12.94 inches. 
The average precipitation at the Belle Fourche Experiment Farm 
is very near the normal for the western part of the State. The 
period during which experiments have been conducted includes three 
years in which the precipitation was less than the normal, one of them 
beimg the driest known in the history of the State, and three years 
in which the precipitation was above normal. 
In order to make practical use of field experiments, it is necessary 
to know to what extent the conditions under which they were con- 
ducted are likely to continue through a considerable period of time. 
For this reason Table III, which gives the annual precipitation at Fort 
Meade, S. Dak., for a period of 35 years (1879-1913) is included. 
The record of precipitation at Fort Meade is practically contmuous 
since 1879. Where there have been omissions, it has been completed 
from the records at near-by points. 
Taste III.—WMonthly, seasonal, and annual precipitation at Fort Meade, S. Dak., for 
85 years, 1879 to 1918, nclusive. 
. [Data (in inches) from the records of the Weather Bureau.] 
Sea- | To- 
s 
Year. Jan. | Feb. | Mar. | Apr. | May.| June.| July. | Aug. |Sept.| Oct. | Nov.| Dec. Samal tal 
S37 eae ene ees [ieee eh ee (eas Sm literal sia Jl rove race 0:78) 1-40) 0.14 |. 1560) 0204 | 089))2-2522)2 25.2% 
ISSO RSE ae ce eetee 0.38 | 1.00 | 0.92 | 0.75 |...-.-- 4.68 | 1.62 | 3.91 | Te OA ales a4 SOS Ge Sal aoee 
INSSdee ieee ne .56 | 1.30 95 | 1.10 | 3.33 | 2.66 | 1.50 | 1.57 | 1.00] -63 | .46| Ta@ | 9.54 | 15.06 
IGS2 eee eae .10 10 60 | 4.77 | 3.87 | 5.47 | 3.05 | .44] .26|) .49]| .05]| .12 117.76 | 19.32 
ISSSE Tees 2.90 30 | 2.16 | 4.50 | 9.61 | 1.56 | 2.80 | .18 | 1.60 Cs Oh |e e2: 120263: 276.05 
RSH eae a Se .37 33 | 2.26 | 5.04 | 8.58] .48] 1.20 | 2.30] .23 GO| 393) |) 5 90) (15622597, 
WESSEeaseoecs: B32 239 boon |b 3O 64 | 3.38 | 1.52 | 3.22 | .28 74) .93 17 | 7.36 | 13.25 
SSO Yee woes: 32 67 | .88 | 2.17 57 | .90) 3.38 |. 1.50 | .40 ADR COME 2072 90) Passo 
NSS iecrsietare cisions a . 56 20 .76 { 2.12 | 2.72 | 1.76 | 4.46 | 4.25 | 1.10 40 24 . 36 |11. 82 | 18.93 
iG oaemocaer 1.65 | 1.29 | .75 | .20 | 3.94 | 5.50 | 2.64 | 3.54} .02 1A SUG PSL 138035 (820500 
Ig ee apemcaaae wu 85 | .12 | 2.64 | 2.02 | 1.60 | 6.38 | 0 .67 | 1.71 | .88]| .86 |12.76 | 18.00 
TSOONses soak .55 46 | 1.24 | 1.65 | 2.31 | 6.30 | .16| 1.64] .76 38 | .40] .38 |11.66 | 16.23 
SOUS Sere cece .78 83 | 1.63 ; 2.29 | 6.60 | 4.29 | 1.75 | 1.50 | .87 ANG 232) Onno pola) 
NSO Diver oee 1.36 27 | .67 | 5.70 | 3.30 | 3.99 | 1.04 | 2.93 | .32] 2.46] 1.51 | 1.54 |14.70 | 24.09 
1893 ae ws ciccce 40 74 | 2.41 | 3.45 | 2.01 | 1.63 | 1.14 | .70] 0 3.48 | 1.48 | 1.68 |10.64 | 19.12 
SQA ee reece 55 12.) 3.08 |. 3.48 | 1.15 | 3.80 | .57) .42') .62) 1.24 | 1.03 72 |12.08 | 16.78 
WS OD Mies Sema . 85 {61.05 |02. 26 | 2.91 | 3.385 | 5.05 | .55) .95) .80 23 | 2.36 40 }14.12 | 20.76 
IAD eee set Sees .66 | 1.14 | 3.43 | 2.51 | 2.69 | 2.62 2 Wi asOn) (022460 ora 27 06 |11.97 | 17.61 
NSO Fis as eteane se 1.33 05 | 1.36 | 1.80 | 1.07 | 5.32 | 2.05 | 3.11] .01 02} .50) T@ /11.60 | 16.62 
TSOSE eee 1. 20 15} .83 | 1.20 | 9.60 | 2.70 | 1.20 | 1.50 | 1.80 | 1.54] .33 | 1.10 |15.53 | 23.15 
ROG Ee tis 3 91 46 | 1.42 | 4.15 | 6.75 | 2.35 29] .30) 1.10} 1.94] .14 | .56 |14 96 | 20.37 
OSes esas . 50 34 | 114 | 295°) .35) 3300 | 2.05 | 1.90 |) 2.03 46 SON 207. 49") 13892 
100) Ee eeeenecace 47 99 | 1.71 | 1.68 | 2.83 | 6.78 | 2.83 | 2.75 | 1.35 83 17 | .89 15.83 | 23.28 
OWES Sopeeaods 1.53 | 2.30 | 5.53 | 3.80 | 3.35 | 3.57 | 1.11} .07) .75 10 OU OMe 7363 |) 22519 
1903S ose ce es . 50 90 | 1.70 | 2.55 |} 3.36 | 2.16 ! 4.25 | 3.56 | 2.90 40 80 | .81 }14.02 | 23.89 
TG) Ee Ss ares .26 | 1.22 .3l .96 | 4.52 | 5.76 .40 | 2.35 45 | 1.86 16 72 111.95 | 18.97 
QOS Soa aa secs 97 21 | 1.14 | .49 | 5.94 | 4.84 /10.33 |] .62 12 | 4.95 64 12 |22. 74 | 30.37 
WQ0GESee ese 30 | 1.42 | 2.25] .25 | 5.37 | 1.85 | 1.45 | 5.55 12 | 1.20 92 | 1.30 |11.17 | 21.98 
10S 22 See ees - 60 40 | .30 85 |10.95 | 8.10 | 6.23 | .04 | 1.40] 0 0 33 |26.43 | 29. 20 
1908 ee eseee -10 | 1.00 | 1.15 | 2.80 | 3.98 | 1.87] .50.| %.80 58 | 2.20 | .382] 1.70 10.30 | 17.00 
NQ0QE eS eetees ~ 12 LQ 4 Qel PQS 2381Ob20) | Siioss| 3. LOnpe s30nl ale50) SOF EDSON MeL 248 a7 30512 
1910S ete se 57 10 | 1.55 | 2.00 | 2.70 | 1.70 | 1.62 | 1.44 | 3.49 52 | 1.06 13 | 9.57 | 16.88 
KO anes 17 45 | c.09 | ¢.47 | ¢.04 | ¢.62 | ¢.58 |c2.29 | ¢.97 |cl1.06 |cl.08 | ¢.58] 1.80] 8.40 
IN eaaeeceree c. 09 31 | 1.19 | 2.90 | 1.91 70 | 2.78 | 9.15 | 2.50 80| T | 1.02] 9.48 | 23.35 
AQIS Sosa ce se 95 60 | 3.30 40-| 3.10 | 2.08 | .25 93 68 |c2.37 | ¢.14 30 | 9.13 | 15.10 
Mean...-. .68} .64 | 1.47 | 2.24 | 4.02 | 3.57 | 2.18 | 1.92 | .94] 1.06] .61] .63 |13.45 | 19.86 
a T=trace. 
b Record missing; estimated from the records at near-by stations. 
c Record missing; rainfall at Vale, S. Dak., about 15 miles north of Fort Meade, substituted. 
