174 BULLETIN UNIVERSITY OF MONTANA 
Bibliography of Montana Shells. 
Squyer, Homer; List of Shells from the vicinity of Mingusville, Mont. 
Nautilus, Vol. VIII, pp. 63-66, 1894. 
Pilsbry, H. A., and Johnson, C. W. A classified catalogue, with local- 
ities, of the Land Shells of America, north of Mexico. Nautilus, Aug., 
1897 to April, 1898. 
Pilsbry, H. A. New American Lands Shells. Nautilus, Vol. XIV, p. 
40, 1900. ‘ 
Elrod, Morton J. Montana Shells. Rocky Mountain Magazine, Vol. 
11, No. 3, pp. 692-697, 4 pl., 1901. 
Elrod, Morton J. Collecting Shells in Montana. Nautilus, Vol. XV, 
pp. 86-89, 103-4, 110-112, 129--80, 1901. 
Bibliography. 
The following papers and publications were prepared at the Bio- 
logical Station, or emanated from work carried on there. 
Cowles, H.C. The Influence of Underlying Rocks in the Character of 
the Vegetation. Bulletin Am. Bureau of Geog., Vol. 2, Dec., 1901; makes 
reference to the rock vegetation of MacDougal’s Peak. 
Cowles, H. C. Ecological Problems Connected with Alpine Vegeta- 
tion. Read at the meeting of the Botanists of the Central States, Chi- 
cago, December, 1901. Printed in abstract in Science. 
Elrod, Morton J. The Beauties of the Mission range. Rocky Moun- 
tain Magazine, April, 1901, pp. 623-631, 4 pl. 
Elrod, Morton J. The University of Montana Biological Station. 
Rocky Mountain Magazine, Vol. II, 1901, pp. 781-787, 4 pl. 
Elrod Morton J. Montana Shells, Rocky Mountain Magazine, Vol. 
II, 1901, pp. 691-697, 4 pL 
Elrod, Morton J. Limnological Investigations at Flathead Lake, 1899. 
Trans. Amer. Mic. Soc., Vol. XXII, pp. 63-80, 9 pl. 
Elrod, Morton J. The University of Montana Biological Station. 
Jnl. App. Mic., Vol. IV, No. 5. pp. 1269-1278, 138 fig. 
Elrod, Morton J. The Value of the Telephoto Lens, Jnl. App. Mic., 
Vol. IV, No. 4, pp. 1241-1242, 2 ills. 
Elrod Morton J. Variations in Dragonflies, read before Sec. F., Amer. 
Assn. for the Adv. of Science, Denver, Aug., 1901. 
