I0 °4 General Notes. [December, 



cylindrical, hyaline, guttulate, uniseptate, 18-21 x 3-/c On lvs. of 

 ( clasti its sea miens. Chester Co., Pa. 



Oospora Tulipifcra E. and M.— Hyphae subhyaline, becoming 

 brown, septate, caespitose, 42 X 3 fi. t on light-brown spots, with a 

 dark, narrow border ; conidia subhyaline, ovate or fusiform-ron- 

 catenate, borne on the tips of the hyphae, 7-9 x 3-4^ a*. On lvs. 

 of Lmodendron. West Chester, Pa., Dr. Martin, and Bethlehem, 

 Pa , E. A. Rau, Sept. and Oct. Common.— ?. B. Ellis, Ncwfiild, 

 N. %, and Dr. G. £. Martin. ■ 



Cut-leaved Beech.— Miss Kate Furbish sends tracings (here 

 reproduced one-third natural size) of some pinnately lobed leaves 

 of the beech, taken from a tree at Chesterville, Me. Dr. Packard 

 found similar leaves at Brunswick, Me. The latter we have ex- 



ned, and find that the lobing- 



Of tin 



hyma midway between th< 



the e 



arly breaking 





s, the growth 



sual u. 



iv. Probably 



of the rest of the leaf tissue continuing in the 1 



Miss Furbish's specimens were produced in the same manner. 



Agency of Water in Forest Destruction.— The note in 

 reference to the discussion of this topic before the Philadelphia 

 Academy (see p. 622, July number, A.m. Nat.) is correct, so far as 

 it goes, and yet from its brevity possiUv gives a verv different 

 impression of the facts than actually occurred. 



I he discussion arose from a letter read to mm Professor Sheafer, 

 of Pottsville, detailing a case where a large area of forest was de- 

 stroyed by the construction of a beaver dam. Mr. Median sim- 

 ply gave instances of a similar character, where, by the formation 

 of railroad embankments, immense areas of forests had been de- 

 stroyed, and geological instances from now treeless prairies," in 

 winch buried forests had evidently been destroyed by water. He 

 incidentally referred to his former addresses before the Academy, 



