134 
lute quantity has an appreciable value as a fertilizer. The methods 
of determining the quantities of nitrogen need not here be given, but 
the following results of observations in Europe give at least an 
approximate idea of the probable effect of rains in the United States. 
(See Annuaire de Montsouris, 1889, p. 254.) 
own territory have not been measured, so far as I can find. 
Similar data for our 
Quantity of nitrogenous compounds in the rainfall of 1888 at Montsouris. 
Month. 
J ANUATVG Sore se ees cae eee te ee a ee ae ee eee 
February ------ Be eR ie eae ARE od Lee Pied: NER SOLS OL, 
September 
October 
SATU USE) ee 22 Se ee OT ee ee ee eae ee 
7 eve 1 square me- 
Total | Num; | " contains | “of ground 
Calley | ees. 
days. | Am- | Nitric) Am- | Nitric 
monia.| acid. | monia.| acid. 
mug. mg. mg. mg. mg. 
21.5 12) 5.15] 0.84] 110.7 18.1 
38.4 33; :2.19) |, Al 00)| eed 38.5 
87.7 26 | 1.51] 0.61 | 192.4) 53:8 
55.5 16| 1.50) 0.78) 842 43,2 
19.8 7) 0.80] 0.82] 15.8 16.2 
79.6 16) 1.10| 1.02] 87.9] 812 
76.0 22| 0.56] 1.36] 44.0] 108.6 
47.5 TD), (20.885 ted Oa ctey 52.5 
23.0 4| 2.831 (0/87'|| 86 | om 
19.4 11} 262] 0.68] 51.4 13.2 
48.3 7 | 2.21) (0585 | 106% 41.2 
31.6 10| 3.62] 0.50] 11443) %.9 
548.3 166, |= oe ae |e | 926.8} 497.0 
45.7 14] 1.69/ O91) 77.2) 41.4 
Quantity of nitrogenous compounds in the rainfall during swecessive years at 
Montsouris. 
Seasons (warm or cold). 
1 square meter 
receives— 
Seasons (warm or cold). 
1 square meter 
receives— 
Ammo- Nitric Ammo-) Nitric 
nia. | acid. nia. acid. 
mg. mg mg. mg. 
1875 (Sept.)-1876 (Feb.) ---.------| 574.9 |-------- 1883 (Mar. )-1883 (Aug.) --------- 431.6 106.4 
1876 (Mar.)-1876 (Aug.)---------- BORO i Reena 1883 (Sept. )-1884 (Feb.) _...-.---] 481.3 228.5 
1876 (Sept.)-1877 (Feb.) _...------ 387.6 | 210.3 || 1884 (Mar.)-1884 (Aug.) -.-..---- 544.0 91.9 
— 1877 (Mar.)-1877 (Aug.)__--.----- 542.1 | 135.5 || 1884 (Sept.)-1885 (Feb.) -.------- 518.5 152.7 
1877 (Sept.)-1878 (Feb.) -..------- 423.7 93.6 || 1885 (Mar.)-1885 (Aug.) --..----- 499.5 152.7 
1878 (Mar.)-1878 (Aug.)---.------ | 725.7 50.3 || 1885 (Sept. )-1886 (Feb.) --.--_--- 569.9 137.4 
1878 (Sept. )-1879 (Feb.) -.-------- 462.1 | 169.1 || 1886 (Mar.)-1886 (Aug.) --------- 589.6 222.8 
1879 (Mar.)-1879 (Aug.)---------- 825.3 | 285.4 || 1886 (Sept.)-1887 (Feb.) -.-.--__- 376. 2 158.9 
1879 (Sept. )-1880 (Feb.) _____- __..| 230.5 | 336.4 || 1887 (Mar.)-1887 (Ate) eee 728. 2 219.6 
1880 (Mar.)-1880 (Aug.)__.______- 310.6 | 299.8 || 1887 (Sept.)-1888 (Feb.) --------- 693.9 180.1 
1880 (Sept. )-1881 (Feb.)---.......| 503.4 | 264.7 || 1888 (Mar. )-1888 (Aug. ) ------- 406.0 350.0 
1881 (Mar.)-1881 (Aug.)---------- | 348.1 | 181.1 Average, cold seasons __._| 503.0 491.2 
1881 (Sept. )-1882 (Feb.)_......._.| 415.2 83.4 Average, warm seasons __| 511.7 191.9 
1882 (Mar.)-1882 (Aug.)_.____..-- | 701.5} 2 7.4 
1882 (Sept.)-1883 (Feb.)-.-_------ | 901.7 | 279.0 
