TESTINC CKAPE VARIETIES IN THE VINTFERA REGIONS. 
11 
Table II. -Temperature and rainfall at the twelve experiment vineyards of the Bureau 
of Plant Industry in California — Continued. 
Minimum Temperatures (° F.). 
Vineyard. 
Jim. 
Feb. 
Mar. 
Apr. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
An- 
nual. 
24 
18 
14 
24 
21 
26 
23 
22 
25 
20 
23 
24 
29 
20 
19 
25 
21 
26 
24 
24 
23 
24 
27 
24 
35 
25 
24 
30 
29 
30 
30 
30 
29 
25 
29 
32 
38 
30 
25 
34 
30 
32 
30 
33 
29 
26 
27 
36 
50 
33 
30 
40 
33 
36 
34 
38 
34 
30 
32 
40 
52 
40 
34 
42 
37 
39 
39 
43 
36 
34 
34 
40 
57 
46 
44 
51 
40 
42 
41 
45 
40 
32 
41 
48 
60 
48 
38 
52 
39 
42 
41 
44 
39 
34 
34 
42 
55 
40 
34 
42 
35 
44 
40 
40 
37 
35 
35 
42 
40 
34 
24 
36 
30 
39 
34 
31 
30 
27 
32 
36 
26 
21 
18 
31 
26 
30 
25 
25 
27 
25 
26 
25 
20 
22 
16 
24 
23 
26 
23 
21 
24 
17 
23 
20 
20 
Chico 
18 
Colfax 
14 
24 
20 
Guasti 
26 
23 
21 
Mountain View 
Oakville 
23 
17 
23 
20 
Mean Temperatures (° F.). 
54.2 
46.3 
42.6 
47.6 
47.4 
49.9 
48.0 
46.5 
49.1 
45.4 
47.3 
45.7 
54.3 
49.6 
44.1 
50.9 
50.3 
51.7 
51.0 
49.4 
51.2 
48.3 
50.1 
48.8 
62.2 
53.0 
46.3 
55.4 
52.8 
54.7 
53.5 
53.1 
53.3 
50.4 
51.7 
52.5 
69.2 
58.9 
52.9 
60.8 
57.8 
58.3 
57.2 
57.6 
56.1 
55.1 
55.5 
56.9 
76.3 
65.3 
59.4 
66.4 
62.4 
60.7 
60.5 
63.0 
59.0 
59.7 
59.4 
62.1 
84.2 
73.0 
68.6 
74.5 
67.3 
67.2 
66.0 
68.8 
62.7 
64.1 
63.8 
68.3 
89.5 
89.3 
83.4 
71.4 
65.7 
73.1 
67.0 
69.9 
68.3 
67.0 
64.3 
65.1 
64.2 
67.8 
71.3 
63.9 
59.0 
64.4 
62.2 
64.4 
62.8 
60.0 
60.2 
60.8 
60.6 
61.1 
60.9 
52.8 
51.6 
54.3 
53.9 
56.5 
54.5 
51.5 
54.0 
52.3 
52.9 
51.6 
51.1 
45.8 
43.5 
45.7 
47.7 
51.3 
48.8 
45.0 
48.1 
45.5 
46.3 
44.2 
70.4 
Chico 
79. 4 77. 5 
61.4 
Colfax 
75.1 
81.8 
69.8 
75.2 
70.9 
72.9 
66.0 
66.8 
66.2 
73.2 
73.6 
80.2 
68.2 
73.2 
69.8 
70.6 
65.1 
65.8 
64.5 
71.1 
56.9 
62.9 
Geyserville 
58.9 
Guasti 
60.9 
59.3 
58.8 
Mount ain View 
Oakville 
57.4 
56.6 
56.8 
Stockton 
58.6 
Precipitation 
(Inches 2). 
Chico 
6.41 
13.12 
2.11 
11.08 
6.05 
4.55 
5.02 
4.47 
8.07 
6.80 
4.24 
3.77 
7.78 
1.30 
6.85 
4.30 
2.00 
2.68 
2.46 
4.42 
4.91 
2.12 
5.46 
11.02 
2.24 
9.49 
6.40 
3.75 
4.71 
4.45 
6.57 
6.02 
3.62 
1.14 
3.00 
.77 
1.40 
1.29 
.65 
.80 
.80 
1.10 
.74 
.72 
0.96 
2.59 
.58 
1.30 
.93 
.57 
1.56 
.54 
.78 
.87 
.68 
0.29 
.95 
.03 
.45 
.12 
.19 
.26 
.18 
.26 
.25 
.14 
T 
T 
.001 
T 
.02 
T 
T 
T 
T 
.34 
T 
0.01 
.002 
T 
T 
.01 
.03 
.003 
.04 
.01 
T 
.01 
1.03 
1.14 
.30 
.96 
.44 
.31 
.40 
.52 
.78 
.82 
.48 
0.79 
2.39 
.56 
1.59 
.56 
.43 
.55 
.51 
.77 
.83 
.42 
2.03 
4.98 
.72 
3.88 
.87 
.90 
1.14 
.96 
2.10 
2.75 
.99 
3.50 
6.39 
1.26 
5.24 
3.14 
2.47 
2.94 
2.49 
3.95 
4.00 
2.31 
25.39 
Colfax 
53.36 
9.87 
Geyserville 
42.25 
Guasti 
24.13 
15.86 
Lodi 
20.06 
Mountain View 
Oakville 
17.42 
28.81 
Sonoma 
28.33 
15.73 
Data for four years. 
2 T= Trace. 
3 No data available. 
In the care and maintenance of the California experiment vine- 
yards and in prosecuting researches in them, Mr. George C. Husmann, 
Pomologist in Charge of Vibicultural Investigations, is assisted by 
Mr. Fred L. Husmann, Viticultural Superintendent, and Mr. Richard 
Schmidt, Assistant in Viticulture. 
DESTRUCTION OF VINEYARDS. 
In Bulletin 172 of the Bureau of Plant Industry the writer gives 
an account of the havoc wrought by the phylloxera insect to the 
vineyards of the Old World as well as to those of the Vinifera regions 
of this country. Since that bulletin was issued additional heavy 
losses have occurred. 
The destruction in California of once flourishing vineyards cover- 
ing more than 200,000 acres, through the so-called California vine 
disease and other agencies, but most largely through phylloxera, has 
already occurred. All that has been suggested to combat and eradi- 
