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Vol. I. No. 3 
(3) The rot and sporophore described and figured by Robert Hartig 
do not belong to Poly poms dryadeus, but to Poly poms dryophilus. 
(4) In the majority of cases only old or much suppressed trees or trees 
growing under very unfavorable conditions were found attacked by this 
disease. 
(5) The disease does not seem to spread readily to adjacent trees. 
(6) The disease is widely distributed both in America and in Europe 
and is probably found in these countries throughout the range of the oak. 
LITERATURE CITED 
1789. Bueeiard, Pierre;. Herbier de la France. Paris, pi. 458. 
1791. - Histoire des Champignons de la France, t. 1, Paris, p. 356, pi. 458. 
1799. Persoon, C. H. Observationes Mycologicae. pars 2, Lipsiae. p. 3. 
1801. - Synopsis Methodica Fungorum. pars 2, Gottingae. p. 537. 
1821. Fries, Eeias. Systema Mycologicum. v. 1, Gryphiswaldiae. p. 374. 
1849. Hussey, Mrs. T. J. Illustrations of British Mycology. London, [ser. 1], pi. 21. 
1878. Hartig, Robert. Die Zersetzungserscheinungen des Holzes der Nadelholz- 
baume und der Eiche. Berlin, p. 124-128, pi. 17. 
1897. Tubeuf, Kare von. Diseases of Plants Induced by Cryptogamic Parasites. 
English edition by W. G. Smith. London, p. 440-442, fig. 272-274. 
1910. Massee, George. Diseases of Cultivated Plants and Trees. London, p. 
380-381. 
1910. Hedgcock, George G. Notes on some diseases of trees in our national forests. 
[Not published.] Abstract in Science, n. s., v. 31, p. 751. 
1912. - Notes on some diseases of trees in our national forests.—II. Phyto¬ 
pathology, v. 2, no. 2, p. 73-74. 
1913. - Notes on some diseases of trees in our national forests.—III. Phy¬ 
topathology, v. 3, no. 2, p. m-114. 
1913. Leoyd, C. G. Letter No. 44. p. 8, note 47. 
