20 N. H. Agr. Experiment Station [Bulletin 289 



the gipsy moth egg it has been observed that oils of high viscosity effect a 

 greater degree of penetration than do oils of lower viscosities. (W. C. 

 O'Kane, L. C. Glover — Adams Fund.) 



Abnormal Relationship of Fat to Solids-Not-Fat in Milk 



Serious variations from normal of the relation between fat and solids- 

 not-fat in milk content have made advisable a study of their cause. An 

 examination of the milk from 68 farms selling to one firm, for example, 

 showed that while 30 were producing milk below 3.3% fat standard, 37 

 were producing milk that did not meet the 8.5% solids-not-fat standard. 

 Two farms producing about the same amount of milk and both testing 3.8% 

 fat, showed solids-not-fat of 8.01 and 9.01% respectively, a variation far 

 beyond any formula to explain. 



Active work on an investigation of this subject started in December, 

 1934, with running monthly three-day composite samples of the milk from 

 the cows in the University herd. These data will provide a basis for the 

 selection of certain animals or group of animals for further studies of the 

 effect of such factors as feed and herd management in relation to the 

 problem. 



Fifteen-day composite samples from 44 herds delivering milk to one 

 dealer produced among other data the following salient points : That the 

 solids-not-fat content of the milk from these producers showed greater 

 variation in general than the fat ; that the solids-not-fat content is higher 

 in the milk during the time of year when the pastures are good ; that the 

 solids-not-fat content drops when the pastures become short and when 

 the cows are put on barn feeding ; and that at certain seasons of the year the 

 solids-not-fat content decreases when the fat is increasing. 



A survey of 64 herds around Colebrook in the Spring of 1935 showed 

 that : In herds where the cows were in poor physical shape the solid content 

 of the milk was low ; the farmers' herds that had been fed no grain or little 

 grain during the pasture season were mostly in the low soHds group; and 

 the average fat and total solids in the milk from herds receiving only old 

 meadow hay were lower than from a group of herds where some clover or 

 alfalfa hay was fed. (H. C. Moore— Piir)icll Fund.) 



Rural Electrification Survey 



In the latter part of 1934 there was received from Washington author- 

 ization for a state-wide Rural Electrification Survey to be conducted as an 

 E.R.A. Project. The object was : "To determine and locate the potential 

 electric consumption of the area involved, (all unserved area in the state) 

 and facilitate the routing of the necessary distribution lines where they are 

 economically justifiable." Complying with instructions, "that all work 

 should be under the direction of an experienced supervisor who should be 

 an engineer," W. T. Ackerman, Agricultural Engineer of the Experiment 

 Station, was appointed supervisor. The project was sponsored by the Ex- 

 periment Station, the Public Service Commission, the New Hampshire Farm 

 Bureau Federation, and the New Hampshire Rural Electrification Commit- 

 tee. Of particular interest in the instructions issued from Washington to all 

 states was the recommendation of two publications, one of which was New 

 Hampshire Agricultural Experiment Station Bulletin, #266, as references 

 in conducting the national survey. 



