BULLETIN No. 175 MAY, (917 



MASSACHUSETTS 

 AGRICILTLRAL EXPERIMENT STATION 



Mosaic Disease of Tobacco 



By G. H. CHAPMAN 



This bulletin deals with the mosaic disease of tobacco, includ- 

 ing a brief review of the work of previous investigators. It also 

 gives results obtained at this station relating to the cause, reac- 

 tion and control of the disease. It is shown that more than 80 

 per cent, of field infection may be traced originally to the seed 

 bed. Specific methods for control are recommended. 



Requests for bulletins should be addressed to the 



Agricultural Experiment Station, 



Amherst, Mass. 



