QUESTIONS AND ANSWERS 243 



they occupy. The timber that they will i)ro(luce will be clear profit to the 

 land owner. 



The author figures that the protective value of a good cottonwood wind- 

 break a mile long at the end of 40 yeai-s, computing compound interest, 

 amounts to the enormous sum of |35,585.50. Reckoning the cost of an acre 

 of this grove also at compound interest, he finds it to be |2,18G.01, so that the 



area of the grove that will pay its way from the beginning is ^^^^ ^^ 



to 16.28 acres, which is equivalent to a belt 134 feet wide. 



In conclusion, the author submits an ideal plan for the protection of a 

 farm in the Middle West. It differs from other plans previously recommended 

 by the Forest Service chiefly in orientation of practically all the plantations 

 in an east-west direction. Modifications of this plan are suggested to fit the 

 high, dry uplands of the Middle West and the cold northern prairies. 



Recommendations for plantings are also given to fit the Lake States, the 

 Eastern States, the Southwestern States, and the fruit growing regions of 

 the Pacific Coast States. All plantations proposed are restricted in area 

 as nearly as possible to such an extent that their protective value will pay 

 for the land they occupy. With such plantations the farmer can grow his 

 timber free of cost. A copy of this bulletin should be in the hands of every 

 farmer inhabiting the treeless sections of our country. 



QUESTIONS AND ANSWERS 



Many of our readers frequently desire to secure some expert advice regarding various 

 features of forestry work, and do not know to whom to apply for the information. 



The Editor has accordingly decided to establish this column in which he will be glad to 

 publish such questions as may be sent to him, and give the answers, whenever the questions 

 relate to any detail of the work which this Association is doing or such information as it 

 can give. 



The Editor requests that communications be written on one side of the paper only and 

 if possible, be typewritten. 



Spokane, Wash., Mar. 17, 1912. The everglades run 45 to 60 miles east of 



Editor American Forestry: Lake Okeechobee. We have no information 



Will you kindly tell me if there are any about land companies. The region seven 

 public forestry schools or any through which miles west of Lake Worth is moderately 

 a person could work his way in the State healthy, the soil is fertile. This is about on 

 of Washington? the edge of the everglades. — Editor. 



VErne Church. 



A forestry course is given at the Washing- ^ PottsvillE, Pa., Mar. 11, 1912. 



ton Agricultural College, at Pullman, Wash., Editor American Forestry: 



at which I understand there is merely a A party in Schuylkill County claims to 



nominal fee for residents of the state.— have a powder which will nd chestnut trees 



Editor. ''"d others of the scale by putting it on the 



roots. He claims it has been tried with 

 success in Schuylkill County. Is the propo- 



DetroiT. Mich., Mar. 15, 1912. "^'tion feasible? It is in the form of a 



Editor American Forestry : powder. 



I write regarding Florida lands about S. M. Enterune. 



seven miles west of Lake Worth. How far 



do the everglades run east of Lake Okeecho- 

 bee? I have bought some land of the Palm A thorough test is the only means of de- 

 Beach Farm Co. and would thank you for termining the question you ask. I suggest 

 any information regarding same. What that you send samples to the Pennsylvania 

 about the climate? H. E. Rupp. Chestnut Blight Commission.— EdiVor. 



