BIBLIOGRAPHY 



1904. The Natural History of Plants. 2 vols. Gresham 



Pub. Co., London. 

 Miner, R. W. 1928. A Drama of the Microscope. The 



New Rotifer Group. Nat. Hist., Vol. 2S: 500-514. 

 Moore, E. 19 15. The Potamogetons in Relation to Pond 



Culture. Bull. Bur. Fish., Doc. 815, Vol. 33: 251-291. 

 Pearse, A. S., and Terrell, C. B. 1920. Aquatic Preserves. 



Nat. Hist., Vol. 20: 103-106. 

 Pond, R. H. 1905. The Biological Relation of Aquatic 



Plants to the Substratum. Rep. U. S. Com. of Fish and 



Fisheries for 1903: 483-526. 

 Power, S. 1903. The Possibilities of Peat. Outlook, Vol. 



73: 172-175. 



CHAPTER VI 



SPONGES 



General References: Ward and Whipple, 19 18, Chap. 10, Potts, 



E., Sponges (Porifera). 

 McNair, G. T. 1923. Motor Reactions of the Fresh- Water 



vSponge Ephydatia fluviatilis. Biol. Bull., Vol. 44: 



153-166. 

 Morgan, A. H. 1929. Fresh- Water Sponges in Winter. 



Sci. Mo., Vol. 28: 152-155. 

 Potts, E. 1887, Fresh- water Sponges; a monograph. Proc. 



Acad. Nat. Sci., Phila., Vol. 39: 158-279. 

 Smith, F. 192 1. Distribution of the Fresh-Water Sponges 



of North America. Bull. Illinois Nat. Hist. Survey, Vol. 



14: 9-22, Urbana. 



CHAPTER VII 



THE HYDRAS, FRESH WATER JELLYFISHES 



General References: Ward and Whipple, 1918, Chap.' II, 

 Smith, F., Hydra and Other Fresh- Water Hydrozoa; 

 Pratt, 1923. 



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