2JO K. \V. IIEC.NER. 



Biisgen, M. 



'88 Ueber die Art uncl Bcdeutung des Thicrfangs bei Utricularia vulgaris L. 



Berichte der Deutst lu-n Botanischen Gesellschaft, Bd. 6: LV-LXIII. 

 Darwin, Charles. 



'75 Insectivorous Plants. 

 Goebel, K. 



'91 Morphologische und biologische studien. Ann. dti Jardin Botanique de 



Buitenzorg, 9: 1-126. 

 Hegner, R. W. 



'22 The Effects of Changes in Diet on the Incidence, Distribution and Numbers 

 of Certain Intestinal Protozoa of Frog and Toad Tadpoles. Journ. 

 Parasit., 9: 51-87. 

 Hegner, R. W. 



'23 The Effects of Changes in Diet on the Incidence, Distribution and Numbers 

 of Certain Intestinal Protozoa of Rats. Amer. Journ. Hyg., 3: 180-200. 

 Hegner, R. W. 



'23 Observations and Experiments on Euglenoidina in the Digestive Tract 



of Frog and Toad Tadpoles. BIOL. BULL., 45: 162-180. 

 Langeron, M. 



'25 Biologie et ecologie des utriculaires dans leurs rapports avec la prophylaxic 



du paludisme. Ann. Parasit., 3: 412-415. 

 Luetzelburg, P. von. 



'10 Britriigc zur Kenntnis der Utricularien. Flora, 100: 145-212. 

 Mueller, H. O. 



'25 The Rotifer Group. Nat. Hist., 25: 225-232. 

 Treat, Mary. 



'75 Plants that Eat Animals. The Gardener's Chronicle, N.S., 3: 303-304. 

 Reprinted from the New York Tribune. 



