REPORT 



OF THE 



Department of Botany. 



F. C. Stewart, Botanist. 



W. 0. Gloyer, Associate Botanist. 



M. T. Munn, Assistant Botanist. 



F. A. Sirrine, Special Agent. 



F. M. Blodgett, Associate Botanist. 

 (Connected with Hop Culture Investigations.) 



TABLE OF CONTENTS. 



I. An experiment on the control of currant cane necrosis by 



summer pruning. 

 II. Seed tests made at the Station during 1912. 



III. The persistence of the potato late-blight fungus in the soil. 



IV. The injurious effect of formaldehyde gas on potato tubers. 

 V. The efficiency of formaldehyde in the treatment of seed pota- 

 toes for Rhizoctonia. 



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