ANNUAL REPORTS. 267 



DEPARTMENT OF BOTANY. 



Charle;s Brooks. 



September 1st, 1905— November 1st, 1906. 



Within the past year botanical quarters, consisting of 

 an office, a herbarium and a small laboratory, have been 

 fitted up in Nesmith Hall. The equipment has been in- 

 creased in the way of apparatus for the study of physiolog- 

 ical and pathological conditions in plants. Among the 

 additions are an autoclave, an incubator, a parraffin oven and 

 a microtome. 



PLANT DISEASES. 



The excessive rainfall early in the season made the past 

 summer very favorable to fungous diseases. The depart- 

 ment has kept a record of these as they occurred and so far 

 as possible has gathered data in regard to the extent and 

 nature of the injury done. The study has been carried on 

 by means of specimens sent to the station for identification, 

 by watching the produce in the markets, and by making a 

 careful survey of the gardens and orchards in certain sec- 

 tions of the state. The following are some of the diseases 

 that are known to have occurred in New Hampshire the past 

 year. Collections have been made of these and other dis- 

 eases and the specimens stored in the college herbarium. 



Diseases oe the Apple. 



Apple Scab [Venturia ponii (Fr) Wint.]. This disease 

 is of common occurrence in the orchards of the state. It 

 appears in the spring on the young foliage as velvety, olive 

 colored patches. In severe cases the leaves become shriv- 



