AMERICAN INSTITUTE, 291 



Mr. Waring moved for a committee of three to examine the 

 mai-ket ordinances and report. Adopted. 



The Chairman appointed Messrs. George E. Waring and Solon 

 Robinson, and Hon. Mr. Bergen. 



P. C. Ingersoll of Greenwich, Connecticut, exhibited a small 

 model of his patent saw for felling trees. A crank turned by 

 one man gives quick motion to a saw of the form of a segment 

 of a circle. This saw can act close to the ground, and thus save 

 so much of the tough but-ends of timber, and leave no stumps in 

 the hill. When the saw has entered the but sufficiently, a wedge 

 is driven in behind the saw and relieves the saw, and at tlie same 

 time cants the tree so as to secure its fall from the operator. A 

 machine will cost twenty dollars. This macliine can also be used 

 vertically for sawing wood. 



Eev. Samuel White, of Staten Island. I raise Jfine Silesia let- 

 tuce on ground well tilled and manured for celery. I can afford 

 to sell these heads for a cent a piece. They ai-e very wholesome; 

 my pigs thrive upon it — for a time they are as good as grain for 

 the pigs. 



Mr. Judd — The dull soporific efiect produced by eating lettuce, 

 resembling that of tlie poppy, renders it best to eat but little of 

 It. 



Dr. Waterbury— Lactucarium (lettuce milk) is quite feeble in 

 this plant at any state of its growth, and what strength it posses- 

 ses is much weakened by high cultivation. 



Dr. Church (the Chairman). Dr. Fully tried doses of it of 

 two ounces each — with very little effect as an opiate. 



Mr. Eergen— Tliere is then but verv little opium in lettuce alter 

 all? 



Prof. Mapes said tliat he had tried the experiment of gathering 

 the Lactucarium by making small incisions in the stalk; I found 

 next day a small button of it formed. These buttons have been 

 gathered by others and sold for four dollars a pound. 



I prick out my young lettuce plants into a cold frame bed; they 

 stand the winter well, become stocky; and when spring comes 

 they grow better than the plants from hot beds. I set them a 

 foot apart, so that an acre holds more than 40,000 of them. I 

 also set them between rows of cabbages,' among radishes, and in 

 any row crop as that is taken out. One man can set out 3,000 

 of them in a day, if he understands dibbling. 

 Dr. Field read the following paper, viz : 

 Mr. Chairman — The recent publication of Baron Liebeg's Re- 



