CALIFORNIA CITRUS CULTURE. 81 
some work, but all day operations are liable to cause severe burnings of 
fruit and foliage. 
Excessive cold is also liable to cause disastrous results. Keep a 
thermometer on the wagon and do not operate under the following 
conditions: when the temperature is 70 degrees Fahr. or more above 
zero or when it is 36 degrees Fahr. or less. This latter temperature 
should be carefully avoided, especially upon damp or wet nights. 
Hot, electric winds also tend to produce severe burning, and all work 
should be suspended on nights they are blowing. 
Orchards previously sprayed with Bordeaux mixture should not be 
fumigated, as there results a chemical reaction which is exceedingly 
damaging to the fruit and foliage. 
VENTURA COUNTY ORT CU IORAL COMMISSIONER 
FUMIGATING SCHEDULE FOR BLACK SCALE 
SODIUM CYANIDE 
DISTANCE AROUND, IN FEET 
DISTANCE OVER, IN Feet 
16] 18} 20] 22] 24] 26 | 28] 30] 32] 34] 36 | a8 | 40] 42] 44 | 46] 48 
wfafifafafa 10 
wiyajail2}2]e2]e2 12 
wa} a2[2]/2/2}2)2)/3s]3 [3s [3 [3s [a | 14 
wf} 2);2}2])/2/3/3/3),3 |3 1/4 /4 [a 4| 4 16 
w]}2]}2]2]/3s|3)/3})4f4fala]a [a 4] 6 18 
20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 |38 | 40 | 42 | 44 | 46 | 48 | co | 2! 54 | 66 | 58 | co 
20 2{/3[ 3[ 4]/4]4]4]4 [a [os 5| 5| 6] 5] 6| 6 20 
22 a4{/4]4]4]4 ]4]5 |5 5| 5{ 6] 6| 6] 6 22 
24 4/4/44 ]/5 |5 [5 |6 6| 6| 6] 6] 7] 7 | 24 
26 4/6/65 {5 |6 |6 6] 6} 6] 7] 8] 8 8| 8] 8| 8 26 
28 5/5 |6 |6 {6 6| 7| 7] 8|8]s8 s{ 8| 9| 9 28 
30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52] 54| na | 58] 60] 62] o4| ool 68 
30 5 |6 {6 |6 |7 7} 8| 8} 8 {s{s| s{ 9| 10{ 11] 11] 11] 11] 12] 12] 30 
32 7 18 8| 8| 8 9 | 9 | 10] 10] 11] 11] a1] 11] 12} 12] 13] 32 
34 8 8| 8| 9 | 10] 10] 11 | 11] 11] 11] 11] 12] 12] 13] 18] 13] 34 
36 8 8{ 9 | 10] 10] a1] 11 | 12] 11] 12] 13] 13] 13] 13 14] 14] 36 
38 a{ 9 { 10 { 11] 21 { 11 | 12] 12] 13] 13] 13] 14] 14] 14] 15] 38 
40 | 42 | 44 | 46 | 48 | 50 | 52] 54] 56 | 53] Go| 62] «4] ool os 
40 a! 10] 11] 11] 11] 21 | 12] 13] 13] 14] 14] 14] 15] 16] 15] 40 
41 ur] a] a2] 1a | a2 | 13) 13] 14] 14] 14] 15] 16] 13] 16] 42 
42 11] 11] 12 | 13 | 13] 14] 14] 14] 15] 15] 15) 16] 16] 44 
43 12| 13] 13 | 14] 14] 14] 15] 15] 15] 16] 16] 17] 46 
4 13 | 14] 14] 14] 16] 15] 15] 16] 17] 17| 48 
bo | 52/54] 56] se] col 62] oa! ool o8 
2 13 | 14] 14] 15] 16] 15{ 16] 17) 17] 17] 50 
ba 1a | 14] 15] 15] 15] 16] 17] 17 17) 17] 52 
47 a4] 34] 15] 15] 26] 17) 17] 17] 17) 18) 54 
res 14| 15] 15] 16] 17] 17] 17] 17] 18] 18) 56 
2 14| 15] 16] 16] 17] 17] 17] 17} 18] 19) 58 
NOTE.—Quarter and half ounces are omitted to make the achedule more practical for field conditions, 
Prop: for mixing Cyanide 1, Sulphuric Acid 1%, Water 2. 
Fic. 55..-Dosage schedule No. 3 for black scale using sodium cyanide as prepared by 
Woglum. (Essig, P. C. Jr. Ent.) 
BUYING MATERIALS. 
Fumigating acid and cyanide are usually bought in large lots by the 
fumigating contractor, the various associations, the counties and large 
orchard companies who are able to get the benefits of a much reduced 
6—cc 
