AGRICULTURAL EXPERIMENT STATION. 141 



REPORT OF METEOROLOGIST. 



President Fernald, Meteorologist To The Station. 



MAINE EXPERIMENT STATION. 



Lat. 44% 54\ 2", N. Long. 68% 40% 11", W. 



Following the purpose indicated in the last report, the Experi- 

 ment Station seeks not to duplicate the meteorological work of the 

 College, but rather to study carefully certain meteorological condi- 

 tions which are more or less intimately connected with practical 

 agriculture. 



It therefore addresses itself to an examination of the meteoro- 

 logical phenomena regarded of greatest interest to the cultivator of 

 the soil. 



The most of the instruments employed have been manufactured 

 by H. J. Green of Brooklyn, N. Y. Mr. Robert H. Fernald of 

 Orono, has been observer during the two years that this work has 

 been carried on. In this report the results of observations made 

 during the years 1889 and 1890 are combined. The instruments 

 have remained unchanged in position during the two years. 



The several problems considered will appear in the following 

 pages. The first to which attention has been given, is a deter- 

 mination of the percentage of moisture in forest as compared 

 with that in open field. 



The arrangement of instruments for this investigation is here- 

 with submitted. 



Hygrometer No. 1 is placed in a wooden stand constructed for 

 thermometrical instruments and located in the open field remote 

 from buildings. Hygrometer No. 2 also is enclosed in a wooden 

 box, perforated to allow a free circulation of air, and located also 

 in the open field. Hygrometer No. 3 is also enclosed in a per- 

 forated box attached to a tree in a moderately dense forest. 

 Hygrometer No. 4 is placed in a similar box attached to a tree in 

 a portion of the forest a little more open than that in which No. 



