NOTES ON THE ANATOMY OF PERIDERMIUM GALLS 
21 
On this account the author expects from time to time to issue other 
papers on the anatomy of Peridermium galls on pines and other 
conifers. 
Methods 
In preparing material for sectioning it was first treated with strong 
hydrofluoric acid for several weeks to soften the tissue. The sections 
were stained with Heidenhain's haematoxylin and safranin by the 
usual methods employed in staining wood sections. 
Department of Botany, 
University of Wisconsin, Madison. 
SUMMARY OF LITERATURE CITED 
1. Anderson, A. P. Ueber abnormal Bildung von Harzbehaltern und andere 
zugleich auftretende anatomischer Veranderung im Holz erkrankter Koniferen. 
Forstl. Naturw. Zeitschr. 5: 439-482. 1896. 
2. Comparative Anatomy of the Normal and Diseased Organs of Abies 
balsamea affected with Aecidium elatinum. Bot. Gaz. 24: 309-344, pi. 
14-15. 1897. 
3. Arthur, J. C. and Kern, F. D. North American Species of Peridermium on 
Pine. Mycologia, 6: 109-138. 1914. 
4. de Bary, A. Ueber den Krebs und die Hexenbesen der Weisstande (Abies 
pectinata DC). Bot. Zeit. 25: 257-264. 1867. 
5. de Vries, Hugo. Ueber Wundholz. Flora 59: 1876. 
6. Gerry, E. The Distribution of the "Bars of Sanio" in the Coniferales. Annals 
of Botany 24: 110-123. pi. 13. 1910. 
7. Groom, P. and Rushton, W. The Structure of the Wood of East Indian Species 
of Pinus. Journ. Linn. Soc. Bot. 41: 457-490, pi. 24-25. 1912-1913. 
8. Hartig, R. Text-book of the Diseases of Trees. English Translation. Mac- 
millan and Company, p. 331. 1894. 
9. Hartmann, F. Anatomische Vergleichung der Hexenbesen der Weisstande mit 
den normalen Sprossen derselben. Dissertation Freiburg. 1-39, pi. i. 1892. 
10. Jeffrey, E. C. The History, Comparative Anatomy and Evolution of the 
Araucarioxylon Type. Part 2. Proc. Amer. Acad. 48: 541-549, pi. 5-6. 
1912-13. 
11. Maule, C. Faserverlauf im Wundholz. Bibl. Bot. 33: 1-32, pi. 1-2. 1895. 
12. Mer, E. Recherches sur la maladie des branches de Sapin causee par le Phoma 
abietina R. Hartig. Journ. de Bot. 7: 364-375. 1893. 
13. Penhallow, D. B. A Manual of the North American Gymnosperms. Ginn and 
Company, p. 374. pi. 1-55. 1907. 
14. Thompson, W. P. The Origin of Ray Tracheids in the Coniferae. Bot. Gaz. 
50: 101-116. 1910. 
15- Ray Tracheids in Abies. Bot. Gaz. 53: 331-338, pi. 24-25. 1912. 
16. Thompson, R. B. On the Comparative Anatomy and Affinities of the Arau- 
carineae. Phil. Trans. London, ser. B 204: 1-50, pi. 1-7. 1912. 
