. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. BULLETIN No. 227 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER August 23,1915. THE TOXICITY TO FUNGI OF VARIOUS OILS AND SALTS, PARTICULARLY THOSE USED IN WOOD By C. J. Humphrey, Assistant Pathologist, and Ruth M. Fleming, Scientific Assist- ant, Office of Investigations in Forest Pathology. CONTENTS. * Page. Introduction 1 Historical 2 Tests conducted at the Forest-Products Laboratory 14 Page. Toxicity to fun
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. BULLETIN No. 227 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER August 23,1915. THE TOXICITY TO FUNGI OF VARIOUS OILS AND SALTS, PARTICULARLY THOSE USED IN WOOD By C. J. Humphrey, Assistant Pathologist, and Ruth M. Fleming, Scientific Assist- ant, Office of Investigations in Forest Pathology. CONTENTS. * Page. Introduction 1 Historical 2 Tests conducted at the Forest-Products Laboratory 14 Page. Toxicity to fungi of the more important pre- servatives 31 Summary 35 Bibliography 37 INTRODUCTION. Within comparatively recent years the subject of wood preserva- tion has become of paramount importance, largely resulting from the economic conditions which necessitate the utilization of timber inferior in its resistance to decay to species formerly readily obtained. The rise of wood preservation in the United States within the last two decades has been very rapid. The principal preservatives used have consisted of coal-tar creosote and zinc chlorid, either alone or in combination. Such experimental work as has been done prior to the last two or three years has been directed in large part toward perfecting the mechanical processes of injecting the preservatives into wood, with an idea of securing the greatest relative efficiency as compared with the cost involved—purely an engineering proposition based on 1 The writers wish to thank Mr. Howard F. Weiss, Director of the Forest-Products Laboratory, Madison, Wis., for the interest displayed and suggestions offered during the progress of this work, as well as for the laboratory facilities placed at their disposal. Thanks are also due to Mr. Ernest Bateman, Chemist in Forest Products at the Forest-Products Laboratory, for all the data on chemical analyses of the different preservatives, and to Drs. R. H. True, F. D. Heald, E. P. Meinecke, Caroli
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