736 Tkaxsactioxs of the American lysriTuxE. 



Forest Trees. 

 Mr. G. Haines, Mount Ilollev, jST. J., M-rites as follows : I am 

 inaich pleased with the discussion in relation to the growing forest 

 timber. I have long believed it should be cultivated in many places, 

 and could with profit. If the wish is for fencing and building tim- 

 ber, chestnut is good. Plant at a proper distance for trees, then till 

 the interstices with seeds for hoops such as hickory, oak, &c. The 

 second year the alternate plants could be cut for keg hoops, thus a 

 erop perhaps equal in value to most other productions can be taken 

 each season until only the standards are left. 



Adjourned. 



March 15, 1870. 



Nathan C. Ely, Esq., in the chair ; Mr. John W. Chambers, Secretary. 

 Towle's Grade akd Drainage Level. 

 Mr. Hamilton E. Towle, civil engineer, 176 Broadway, gave the 

 Club a short lecture on grades and levels. With a simple instrument 

 which he has made, a boy of fourteen can lay out a road on a hillside 

 on a given grade, or mark off the course of a ditch in which the fall 

 shall be uniform from one end to the other. His level is the usual 

 curved glass carefully made and nicely set. The sights are movable 

 up and down by screws, of which there are twenty threads to an 

 inch ; the sights are a foot apart. When the instrument is set and 

 the screws are up, the line of sight js exactly horizontal. If the front 

 sight is turned once around, the line of sight is made to fall one-twen- 

 tieth of an inch in a foot, that is, one inch in twenty-feet, five inches 

 in 100 feet. Turning the front sight twice around will give you a 

 fall of ten inches to 100 feet, and so on. This level does just as good 

 work as a theodolite that costs $120, and is of constant value to a 

 farmer in leveling sills, giving the same pitch to his yard, and a uni- 

 form, grade to hillside roads and ditches. 



A Farm School for Giijls. 

 Miss Ennna Marwedel, Hamburg, Germany, read a paper urging 

 the importance of a scrhool where girls can learn how to tend flowers, 

 liow to make nosegays, how to raise calves, prune trees, tend bees, 

 and work butter. My idea is in some degree new, and I think quite 

 new to your country. One of its leading features is to use the work 



