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22. Khittel, J. Chemische Untersuchung der Blatter des Giftsumachs {Rhus Toxicoden- 
dron). Witt. Viertelj. Prakt. Pharm. 7: 348-359. 1858. 
23. Kipling, R. The female of the species. A study in natural history. Ladies Home 
Jour. 28: II. 1911. 
24. Kunze, R. E. Poison Rhus. Med. Tribune 5: 111-120. 1883. 
25. Lavini, M. Emanations deleteres qui emanent Rhus Toxicodendron. Jour. Chim. 
Med. i: 249-251. Paris, 1825. 
26. Leonard, W. W. Rhus poisoning. Med. Chron. 3: 21. 1 884-1 885. 
27. Lindley, J. S. Rhus poisoning. Amer. Jour. Dermat. and Genito-Urin. Dis. 12: 
342-344. 1908. 
28. Mackie, W. W. Value of oak leaves for forage. Calif. Agr. Exp. Sta. Bull. 150. 1903. 
29. M'cMaster, J. B. Life and times of Stephen Girard. 1918. 
30. McNair, J. B. The transmission of Rhus poison from plant to person. Rhus diver siloba 
T. & G. Jour. Infect. Dis. 19: 429-432. 1916. 
31. . Pathology of dermatitis venenata from Rhus diver siloba. Jour. Infect. Dis. 19: 
419-428. 1916. 
32. . ^The poisonous principle of poison oak, non-bacterial. Med. Record 91: 1042- 
1043. 1917. 
33. Maisch, J. M. Proc. Amer. Pharm. Assn. 13: 166-174. 1865. 
34. , On the active principle of Rhus Toxicodendron. Amer. Jour. Pharm. 38: 4-12. 
1866. 
35. Millon, de Revel. Recherches sur le gui de chene, et nouvelles observations sur le 
sumac veneneux, ou Rhus Toxicodendron. Bull. Acad. Med. Paris 26: 501-505. 
I 860-1 86 I. 
36. , Accidents-constatation d'immunite rapportee a la vegetation. Jour. Med. 
Chirug. et Pharm. Toulouse. Nov., 1862. 
37. Pfaff, F. On the active principle oi Rhus Toxicodendron. Jour. Exp. Med. 2: 181-196. 
1897. 
38. Planchon, L. Accidents causes par le contact du Rhus Toxicodendron (Terebinthacees 
Anacardiees). Montpel. Med. II., 9: 61, 219. 1887. 
39. Priestly, J. Experiments and observations on different kinds of airs. p. 324. London, 
1774- 
40. Rest, E., and Gilg, E. Der Giftsumach, Rhus Toxicodendron L., und seine Giftwir- 
kungen. Ber. Deutsch. Pharm. Ges. 22: 296-358. 1912. 
41. Schmiedeberg, O. Grundriss der Arzneimittellehre. 3te Aufl. pp. 213-224. 1895. 
42. Schwalbe, C. On the active principle of Rhus diver siloba (poison oak). Med. Record 
63:855. 1903. 
43. Schwalbe, K. Die giftigen Arten der Familie Rhus: R. diver siloba, R. Toxicodendron 
und R. venenata. Miinchener Medic. Wochenschr. 49: 1616. 1902. 
44. Thompson, W. Challenger Expedition. Jour, and Proc. Ham. Assoc. 8: 126. 1892. 
45. Van Mens, J. B. Memoire sur le Rhus radicans. Actes Soc. Med. Chirurg. et Pharm. 
12: 136-137- 1797- 
46. Von Adelung, E. An experimental study of poison oak. Thesis Univ. Calif. Nov.^ 
1912. Also Arch. Intern. Med. 11: 184. 1912. 
47. Ward, R. F. Severe ivy poisoning. N. Y. Med. Jour. 88: 1224. 1908. 
48. Warren, L. E. Some observations on the pollen of poison sumach. Amer. Jour. Pharm. 
85: 545-549. 1913. 
49. White, J. C. On the action of Rhus venenata and Rhus Toxicodendron on the human 
skin. New York Med. Jour. 17: 225-249. 1873. 
