155 
although sour stocks are more resistant than sweet stocks. Thinks no 
remedy has been found for the disease, although exposure and washing of 
roots has seemed to give good results. (D. G. F.) 
350. Heimerl, Dr. Anton. Zur Beseitigung der Chlorose. Wiener illust., Garten-Zeit., 
16 Jalir., Wien, August-Sept., 8n. 9 heft 1891, pp. 331-335. Pale leaves may 
be due to three causes: (1) lack of light, etiolation; (2) lack of heat; (3) lack 
of iron. Author speaks especially of the pale leaves due to the last mentioned 
cause, giving a r6sum6 of the work of Sachs on the subject. Quotes from 
Sachs the method of treatment: 2-3 or even 6-8 kilograms of iron sulphate is 
mixed with earth in ditches radiating from the tree between the principal 
roots or encircling the tree at a distance of 5-10 decimeters from the trunk. 
Then the tree is liberally watered with 100-150 liters of water. Plants in pots 
may be immersed in a weak solution of iron sulphate. Explains the rather 
large quantity of iron sulphate required to take effect on large plants in 
part by the absorptive action of the soil, in part by the weakening of the 
power of the plant to absorb it. (W. T. S.) 
351. Hewett, C. B. Trees, bugs, and disease. Rural California, vol. 14, Los Angeles, 
Dec., 1891, p. 727, one-third col. States belief that as peach yellows thrives in 
a damp and rainy climate it would not exist in the dry air of California. “I 
believe that if a tree affected by the yellows could be taken up and trans¬ 
planted from an orchard in the East to our soil and climate that unless too 
far gone it would revive and get over it entirely.” (J. F. J.) 
352. Jackson, J. F. Peach yellows. Southern Planter, 51st year, No. 2, Richmond, 
Feb., 1890, pp. 60-61, one-fourth col. Notes the introduction of peach yellows 
bill into the Virginia State legislature. (D. G. F.) 
353. King, Wm. R. Mai di Goma. Bull. U. S. Dept, of Agric., Div. of Pomology, No. 
4, Washington, Feb., 1891, pp. 18-19. Describes characteristics of the dis¬ 
ease; considers cause as not certainly known, but seemingly of possible 
bacterial origin; as certainly contagious by use of infected instruments. 
Recommends as preventive measures: (1) Budding on resistant stocks—wild 
sour orange, rough lemon or pomelo; (2) planting on dry porous soil if sweet 
stock be used; (3) careful irrigation, keeping the water from the trunk of 
the tree; (4) prompt removal and destruction of diseased portions. Quotes 
from Lelong recommending mixture of 1 peck fresh lime, 4 pounds of cop¬ 
peras, 5 pounds sulphur, mixed in enough water to slake the lime, and keep 
covered as a good disinfectant paint. (See also Rural Californian, vol. 14, 
Dec., 1891, p. 718; Fla. Disp., Farmer and Fruit Grower, new ser., vol. 3, 
June 18, 1891, p. 495.) (D. G. F.) 
354. Lelong, B. M. Peach yellows. Pacific Rural Press, vol. 42, San Francisco, 
Oct. 10, 1891, pp. 301, 312, pi. 1, map 1. Describes the yellows as it appears 
in New Castle County, Del., quoting from Bulletin No. 9, Div. Veg. Pathol¬ 
ogy, and giving plate from same bulletin, and enlarged map of distribution 
of yellows and rosette in the United States, prepared with aid of Galloway 
and Smith. An appeal to fruit growers to guard against introduction of 
disease into California through purchase from unreliable nurseries. (D. G. F.) 
355. Lelong, B. M. Peach yellows. A warning to fruit growers. Danger of introduc¬ 
tion into California. Warning to intending purchasers and recommendation. 
Cal. State Board of Hort., Sacramento, 1891, pp. 25, pi. 4, 1 map. Dis¬ 
cusses the dangers of introduction of disease into California. Gives map 
showing extent of the disease, extracts from correspondence with large num¬ 
ber of eastern horticulturists. Quotes from work by Dr. Erwin F. Smith 
and proposed ordinance passed by the county board of horticultural commis- 
, sioners of San Bernardino County. Gives copies of horticultural laws of 
California and peach yellows laws of Michigan and New York. (D. G. F.) 
356. Los Angeles Express. A risky experiment. Rural Californian, vol. 14, Los 
Angeles, Dec., 1891, p. 753, one-fourth col. Refers to statement of theory 
