170 Trrigation for Deciduous Fruits. 
INSTANCES OF IRRIGATION FREQUENCY, SEASON AND VOLUME. 
DECIDUOUS FRUITS. 
i No. of Time of Acre-inches* Season 
County. pa veg ug: irrigatious. ‘lath Totals. 
‘stsineats eexeme 40 3to 4 Summer...... 2 6 to 8 
subieve nuns 28 February....... 12 12 
seis 12 ior 2  £Winter........ 12 12 to 24 
ae 4o I Summer...... 2% 2% 
de enteuineniosen 25 10 May to Oct... 14 12% 
seen 3 5 June to Oct... 1 
evees fey 3 to 4 July toSept. 1% 334 to 
as 8 toro JunetoAug. 1% io to 12% 
Santa Clara 1 to 3 Mar.tojJune. 3 3 to 9g 
_ I Match: ncscsiess 12 12 
a 3 July to Aug. 4 I2 
es I Winter........ 8 to Io 8 to Io 
ra 3 Jan. to July. 4 12 
Monterey 1 to 4 Feb. toJune. 4 4 to 16 
Merced 3 to 4 ‘Summers. 2 to 3 6 to 12 
HS 2to 4 saa 3 to 6 6 to 24 
Fresno 3 to 4 MO saaiaeans 2% 7% to Io 
I February....... 12 I2 
a 3 Mar. to July.. 6 12 
Kings ...... 2to 4 Summer...... 4 8 to 16 
KON: coessoncsninin 4-2 Mar.to June. 4 8 
ANYOs: wexcime, chaste 318 45) Apr. to Aug, 14% 1% 
Los Angeles... 18 1 Mar. or Apr. 6 to 9 6 to 9 
asin 20 I JULY ieeses render 6 6 
Oh ates 12 2to 3 June toNov. 4 8 to 12 
Orange se once 15 2to 3  Summet...... 2 4 to 6 
fe -ateehdewas i 2 Heo sani 4 8 
Riverside ... ..... I5 3 to 6 MaytoSept. 1% 4% to 9 
BO Supine io 3 to 4 #£2x%Apr.toSept. 1% 5 to 6% 
San Diego ........ 8 3 to 5 Summer...... 2 6 to Io 
Bee aceratehin 18 3 Bes Gpetiante 3 9 
* An acre-inch is an actual depth of one inch over the surface. 
The foregoing outline of local practise shows that infinite 
variety exists and in the nature of the case must exist, and that 
any definite prescription of the duty of water is impossible. The 
compilation includes, however, the extremes, and in this way 
gives a sort of picture of prevalent practise. In some cases 
cited, in which the amount of water at each irrigation seems 
small, the fact is due to the use of small basins, while in this 
computation the contents are reduced to acre-inches which cover 
the whole surface; in other cases, as, for instance, the frequent 
irrigations in Sacramento and Placer Counties, the soils are shal- 
low, overlying bed-rock, and a small amount saturates them. In 
other places an acre-foot of water is readily absorbed and re- 
tained in the deep soil. The annual rainfall is also seen to have 
little relation to the amount of irrigation, because neither fine 
shallow, nor deep coarse soils, can retain the volume of water 
which falls upon them during the rainy season. Then the vary- 
