90 BULLETIN 95", U. Si DEPARTMENT OE AGRICULTURE. 
A few years delay will .mean serious loss. It is a simple and practical precaution to 
destroy the -currant and gooseberry bushes before they destroy the pines. The demon- 
strated effectiveness of this method of control justifies pine owners in uprooting currant 
and gooseberry bushes on a large scale (24). ■ * 
Those who do not do this in their pine lands and for a distance of 
200 to 300 yards outside will be likely to see a valuable asset turned 
into a liability. In areas where the white pine is an important tree 
cultivated Bibes should not be planted. A number of States already 
have laws prohibiting such planting without permission from the 
State authorities except in areas designated and set apart as " cur- 
rant-growing districts." 
LITERATURE CITED. 
(1) Aderhold, Rudolf. 
1907. Versuche liber den Einnuss haufigen Regens uaf die Neigung zur 
Erkrankung von Kulturpflanzen. In Arb. K. Biol. Anst. Land- u. 
Forstw., Bd. 5, Heft 6, p. 354-360, 1 fig. 
(2) Amendment of regulations relating to importation and shipment of currants 
1919. and gooseberries. In Agr. Gaz. Canada, v. 6, no. 6, p. 526-527. 
(3) Arthur, J. C. 
1907. Uredinacese. In No. Amer. Flora, v. 7, pt. 2, p. 97-127.' 
(4) Barclay, Arthur. 
1887. On the life history of a new Aecidium on Strobilanthes Dalhousianus 
Clarke. In Sci. Mem. Med. Officers Army India, pt. 2, 1886, p. 
15-27, pi. 2-3. 
(5) Bean, W. J. 
1914. Trees and Shrubs Hardy in the British Isles, v. 2. London. 
(6) BONDARTSEV, A. S. 
1910. Les parasites vegetaux des plant es cultivees et sauvages, recueillis 
dans le gouvernement de Koursk en 1901, 1903-1905. In Acta 
Horti Petropolitani, t. 26, fasc. 1, p. 1-25. In Russian. 
(7) Brefeld, Oscar. 
1891. Untersuchungen aus dem Gesammtgebiete der Mykologie. Heft 9. 
Die Hemiasci und die Ascomyceten. 156 p., 4 pi. Minister i W. 
(8) BUNYARD, E. A. 
1917. A revision of the red currants. In Gard. Chron. s. 3, v. 62, no. 1613, 
p. 205-206, fig. 78-79; no. 1614, p. 217, fig. 82-83; no. 1615, p. 232, 
fig. 88-89; no. 1616, p. 237, fig. 90-91. 
(9) BUTTNER, G. 
1906. Liber Yertilgung des Weymouthskieiem-Blasenrostes. In Mitt. 
Deut. Dendrol. Gesell., No. 15, p. 232-233. 
(10) Carleton, M. A. 
1893. Studies in the biology of the Uredinese. I. In Bot, Gaz., v. 18, no. 
12, p. 447-457, pi. 37-39. 
(11) 1903. Culture methods with Uredinese. In Jour. Appl. Micros, and Lab. 
Methods, v. 6, no. 1, p. 2109-2114. 
(12) Clinton, G. P. 
1918. Artificial infection of Ribes species and white pine with Cronartium 
ribicola. In Amer. Plant Pest Com. Bui. 2, ed. 2, p. 14-15. 
