16 



pjiint ; in fact, from the simple nature of the materials we do not 

 believe it possible that any injury can result. 

 Conclusion. 



By the addition of Paris green to such compositions as the above, 

 provided they prove upon further trial to be harmless to the trees, 

 we feel certain some of them will prove an effectual preventive 

 against depredations by mice, and will be free from danger except 

 when poultry or small animals may be allowed to remain in the 

 orchard. 



Farther reports will be made upon this subject before the close of 

 the season, so that anything discovered in this line may be made use 

 of or thorouohlv tested the Coming winter. 



Department, of Meteorology. 



C. D. WARNER. 



It seems necessary to give only a brief outline of the work to be 

 done in this department. 



We shall so far as possible keep a complete record of all meteoro- 

 logical phenomena. For agricultural, legal and other purposes, such 

 a record is of vital importance. 



It is intended to note very carefully the direction, velocity and 

 force of the wind ; the quantity of rain-fall and depth of snow ; the 

 pressure, temperature, the amount of moisture, and quantity of 

 ozone in the atmosphere ; to ascertain the quantity of sunlight and 

 amount of solar radiation. 



There will be a record of all electrical phenomena ; the quantity of 

 electricity in the atmosphere ; magnetic disturbances and the general 

 appearance of the heavens. 



Daily, weekly and monthly records will be kept, and these records 

 will be bound and placed among the archiv. of ihf Station for 

 future reference. 



So fur as possible, self-registering instrumeui-i will be employed 

 in making observations. 



