756 
Journal of Agricultural Research voi. xxvii, No. 10 
which often cling to the spores very firmly. Such bodies can be found on 
the aecidiospores of the Myrica rust in any good herbarium specimen. 
Regardless of the actual mechanics of the discharge in this case, the 
spore in its flight no doubt follows closely the sporabolic curve described 
by Buller for the Basidiomycetes, so that beyond a certain and definite 
limit it probably makes little difference so far as the length of its hori¬ 
zontal flight is concerned, how high above the glass slide the aecidium is 
supported in the experiment referred to. The spore is shot off with a 
very great horizontal velocity which carries it almost straight out for a 
certain distance. Because of air resistance it then takes an abrupt turn 
and falls straight down unless carried away by currents. 
LITERATURE CITED 
(1) Bueeer, A. H. R. 
1909-22. researches on punqi. 2 v., illus. London, New York [etc.] 
(2) Dangeard, P. A. 
1906. EES mucorinEES. In Botaniste, ser. 9, p. 227-252. 
(3) DiETEE, P. 
1912. ueber die abscheEuderung der sporidien bei den urEdineen. In 
Mycol. Centbl., Bd. 1, p. 355 “ 359 - 
(4) Dodge, B. O. 
1923. a new type op orange-rust on beackbErry. In Jour. Agr. Research, 
v. 25, p. 491-494- 
(5) -and Adams, J. F. 
1917. NOTES REEATING TO THE GYMNOSPORANGIA ON MYRICA AND COMPTONIA. 
In Mycologia, v. 9, p. 23-29, pi. 2-3. Literature cited, p. 28-29. 
(6) LEndnER, A. 
1908. EES mucorinEES dE EA SUISSE. 190 p., illus., 3 pi. Berne. Biblio¬ 
graphic, p. 163-171. 
(7) Moreau, F. • 
1913. RECHERCHE 3 SUR EA REPRODUCTION DES MUCORINEES ET DE QUEEQUES 
autrEs thaeeophytes. 136 p., 14 pi. Poitiers. Index bibliographique, 
p. 129-136. 
(8) Strasburger, E. 
1882. UEBER DEN BAU UND DAS WASCHSTHUM DER ZEEEHAUTE. 264 p., 8 pi. 
Jena. 
(9) VuieeEmin, P. 
1903. RECHERCHES MORPHOEOGIQUES ET MORPHOGENIQUES SUR EA MEMBRANE 
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