E 
i 
; 
BOTANICAL GAZETTE. 391 
sible by a di ; 
of aca. angement of the lignified parts. Here the external walls 
lateral walls are li fori et of pure cellulose, while the internal and 
Bees. ‘The a ; the external face of the cells, therefore, will con- 
and unique, The Hired of angiom of Ferns is characteristic and 
ia resonate produced Hap pes effected by the cells are due to the varia- 
The opening of the s pes the dryeew of the air in the interior of the cells. 
of the cell-walls. ta si eas is therefore not due to the contraction proper 
cause of the rupture is tl ree groups of vascular cryptogams the determining 
Peas ge e is the same, viz: the dryness of the atmosphere 
subject, “ Das A iehiapeaee a Dales pammnenees 5 Pere 
. des Oeffnens terior Pome pee cig RASS: 
ROF. : 
Tvations - ana Trevease has published, with plate, a resumé of his ob- 
everal Zoogloex and related forms in the Johns Hopkins series 
a similar 
of Biologic: a 
ogical Studies. The following note as to his method of culture is inter- 
estin to w grb * 
Ge “e Beck ot . cpt various starchy substances were employed as media 
boiled potatoes Blue erent species, but I finally restricted my cultures to 
one or more ae y cut in halves, the exposed face being inoculated in 
BA Saiscuilerion a means of a needle scrupulously fired before and after 
Was Sf which =e ese were kept in sauce-plates, under inverted tumblers. 
WES opened from jean disturbed until the end of the culture, while others 
teed in starting nev nm to time for microscopical study or for material to be 
through the Hacased ou tures. It is needless to say that many of these failed 
cist tkenste _— eh germs in one way or another; but by means 
Ak Alice? thres ao tures of all ages were kept under daily .observa- 
—_—_—— 
et CURRENT LITERATURE. 
rasitie Fy - erie 
site Fungi in Itinoia: Part I, Uredines From the Bulletin of the Illinois 
rill, Ph. D ss of Natural History, vol. I, pp. 139-255. By T. J. Bur- 
The fi ee 188. 
but a si “9 stiiking featu 
ngle order as illustrated in one State ouly, it 
‘or the enumeration. Eighty- 
i The rec 
Prefa 
two one itil ei huudred and fifty octavo pages for t 
Catalogue of i and forty-seven imperfect forms are dese he recent 
thirty-fo the parasitic fungl of Wisconsin gives si ty-five tr species and 
true ae ant ane forms of Uredinee, and that of Iowa gives venty-nine 
Te receivin pie rs -five imperfec f It is plain that the parasitic fungi 
the size of marked attention, and the rusts in particula for 
a the Illinois list is due Professor A. B. Seymour, now of the Univer- 
ler the direction of the State 
Labor; 
boratory, and who has remarkably keen powers of observation. 
plant cited ist is amply described, the localities for each host 
sited, some synonymy given and notes often appended. The whole is 
key followed by a glossary and index of species 
Cal study. - : e thorough and criti- 
labor Sang aoa is a very valuable contribution to American mycology. | 
e synonymy is especially commendable. The author is cautious 
