LETTER OF TRANSMITTAL 



To His Excellency, Austin L. Ckothers., 



Governor of Maryland. 



Sir: I have the honor to present herewith the third volume of 

 the new series of reports of the Maryland Weather Service. The 

 rirst volume dealt in a general way with the broader physiographical 

 and meteorological problems affecting the State at large. The second 

 volume contained the results of a special study of the climate and 

 weather of Baltimore and vicinity and is one of the most exhaustive 

 reports of its kind that has ever been issued. The present volume 

 embraces a discussion of the plant life of Maryland and allied sub 

 jects, the interpretation of which is largely dependent on the physio- 

 graphic and climatic conditions which characterize the State. I am, 



Very respectfully, 



William Bullock Clark, 



Director. 



Johns Hopkins University. 

 December 1, 1909. 



