416 THE ASCOMYCETES. 



paraphyses highly magnified. — Fig. 14, Gyromitra esculenta^Ynts, 

 entire fungus; about one-half nat. size. — Fig. 15, Spore of same, 

 X 300. — Fig. 16, Gyromitra gigas, Cooke, spore; x 300. — 

 Fig. 17, Helvella crispa^ Fries, entire fungus; about one-half nat. 

 size. — Fig. 18, Spores of same; x 300. — Fig. 19, Verpa digi- 

 taliformis^ Pers., entire fungus ; about two thirds nat. size. — 

 Fig. 20, Section of pileus and upper part of hollow stem 

 of same; about two-thirds nat. size. — Fig. 21, Ascus and 

 paraphysis of same; highly magnified. — Fig. 22, Spathularia 

 Jlavida, Pers., entire fungus; about two-thirds nat. size. — Fig. 23, 

 Free spore of same; x 300. —Fig. 24, Ascus and paraphy- 

 ses of same; highly magnified. — Fig. 25, Leotia lubrica, Pers., 

 single plant; about two-thirds nat. size. — Fig. 26, Section of 

 pileus of the same; about two-thirds nat. size. — Fig. 27, Ascus 

 and paraphysis of same ; x 300. — Fig. 28, Free spores of same • 

 X 300. — Fig. 29, Mitrula paludosa^ Fr. ; about two-thirds nat. 

 size. — Fig. 30, Ascus and paraphyses of the same; x 300. — 

 Fig. 31, Morchella conica, Pers., var. deliciosa, Fr., fungus; about 

 two-thirds nat. size. — Fig. 32, Vibrissea truncorum, Fries, group of 

 plants ; nat. size. — Fig. 33, Section of pileus of the same, showing 

 the spores escaping; shghtly magnified. — Fig. 34, Portion of a spore 

 of same; x 750. — Fig. 35, Ascus and paraphyses of same; 

 highly magnified. — Fig. 7,6, Peziza ochracea^ Boudier, two plants ; 

 nat. size. — Fig. 37, Ascus and paraphyses; highly magnified. 



Secretions in Plants. — M. Tschirch announces in the 

 Botanisches Centralblatt that in all the normal cases in which he 

 has been able to study the formation of a secretion, he has found 

 that it was a function, not of the protoplasm, but of the cellular 

 wall. In the oil-glands of the labiates, composites, etc., the 

 secretion is due entirely to an internal layer of the cellular wall, 

 and the same is the case with the Papilionaceae. The secretions, 

 however, are never produced by the metamorphosis of the sub- 

 stance of the cellulose itself. The observation applies likewise to 

 the resins, which M. Tschirch considers as aromatic acid com- 

 pounds with a particular group of alcohols, which he calls resinols. 

 — Scie?ttific American. 



