VI 



CONTENTS. 



Report of the assistant agriculturist — Concluded. 



Sulfate of ammonia v. nitrate of soda as a top-dressing for per- 

 manent mowings, 

 Lime experiment, 

 Variety test potatoes, 

 Report of the chemist, 



Work of investigation, 



Work of the fertilizer section, 



Fertilizers registered. 



Fertilizers collected and analyzed. 



Other activities of the fertilizer section. 



Field experiments with basic slag phosphate. 



Field experiments with new mineral fertilizer and stone meal. 



Other vegetation experiments. 



Report of the feed and dairj^ section. 



The feeding stuffs law, . 



The dairy law, .... 



Water analysis, .... 



Milk, cream and feeds for free examination. 



Testing of pure bred cows for advanced registry. 



Miscellaneous work, 



Numerical summary of substances examined in the chemical 



laboratory. 



Report of the botanist, 



Report of the entomologist, 



Report of the horticulturist. 



Annual report of Dr. J. K. Shaw, 

 Report of the meteorologist, 

 Report of the veterinarian, 

 Report of the poultry husbandman. 



Part II. 



Bulletin 156. Electrical injuries to trees, 



Introduction, 



Electrical resistance of trees. 

 Effects of alternating currents, 

 Effects of direct currents, . 

 Death of trees from direct currents, 



Electrolysis, 



Lightning, 



Earth discharges, .... 



Susceptibility of different trees to lightning stroke, 

 Methods of preventing injury to trees from wires, 

 Summary, 



