APR 2 9 1905 
The Ohio ^JYaturalist, ubu 
N£ , 
PUBLISHED BY BO '' ' 
The Biologica.1 Club of ihe Ohio State Uni-versity. GAT. 
Volume V. APRIL, 1905. No. 6. 
TABLE OF CONTENTS 
Y’illi.\mson— Oilonata, Astacklae and Uniouidae Colletted Along.lhe Rockcastle River 
at Livingston, Kentuckj' 309 
Cl.v.vssex— Key to the Liverworts Recognized in tlie Sixth Edition of Gray's Manual 
of Botany .312 
S.’HITH— Key to the Ohio Elms in the Winter Condition .315 
Gleason— Notes from the Ohio State Herbarium. Ill 316 
Riddle— Development of the Embryo Sac and Embryo of Staphylea Irifoliata 320 
York — A New Aspid.'otus from Aesculus glabra 325 
Landacke— The Kate of Growth in Epistylis flavicans 327 
Sl’IU'ace— Meeting of the Biological Club 329 
ODONATA, ASTACIDAE AND UNIONIDAE COLLECTED 
ALONG THE ROCKCASTLE RIVER AT 
LIVINGSTON, KENTUCKY. 
E, B. Williamson. 
The few following records of two days collecting in Rock- 
castle County, Kentucky, near the headwaters of the Cumberland 
River on June 23 and 24, 1904, may be of interest. Since col- 
lecting along the Cumberland at Xashville, Tennessee, I have 
been desirous of following the same river among the hills of 
eastern Kentucky where I expected to find the Rockcastle a 
rapid mountain stream with waterfalls, deep pools and long, 
swift rapids. Such is far from its nature. Its bed in the soft 
rocks is nearly made and, resting from former labors, the stream 
flows so slowly under the overhanging branches of birch trees 
that its motion is almost imperceptible. Shaded bv trees and 
hills, steep-banked, cold and motionless, it offers few of those 
attractions to dragonflies which' I had hoped ot find. There are 
no gorges and only an occasional low, short ripple (locally shoal) 
relieves the monotony of long stretches of canal like tranquility. 
The perfume of flowering laurels on the verdure-clothed banks 
saturate an atmosphere in which sound and motion would be as 
sacrilegious as in the chamber of death. Doubtless at seasons 
there is greater activity. On the dates above mentioned (June 
23 and 24) only nine species of dragonflies were taken. I believe 
collecting three weeks earlier would have revealed a greater 
number of species and individuals, and possibly a great many 
Gomphines might have been found at the ripples at this time. 
