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Apparatus to Illustrate Boyle's Law, by F. M. Andrews 369 



Some Monstrosi ies in Plants, by F. M. Andrews 373 



A List of Algae (Chiefly from Monroe Co., Ind.) by F M. Andrews 375 



Additions to Indiana Flora, Number 4, by Charles C. Deam 381 



Right and Wrong Conceptions of Plant Rusts, by J. C. Arthur 383 



The Effect of Preservatives on the Development of Penicillium, by 



Katherine Golden Bitting 391 



Further Notes on Timothy Rust, by Frank D. Kern 417 



The Woodlot for Central Indiana, by E. C. Pegg and M. B. Thomas. . . 419 



Recent Work in Wood Physics, by W. K. Hatt 441 



Forest Conditions in Indiana, by Stanley Coulter 447 



Index 463 



