34 Experiment Station Bulletin 367 



The European spruce sawfly was present in very low numbers in all 

 spruce stands examined in 1945. The insect has not yet shown any tend- 

 ency to build up in numbers at any one point. 



J. G. CONKLIN 



FORESTRY 



Sugar Maple Propagation 



The seedlings from the sweet trees have grown vigorously and are 

 of such a size that they were transplanted in the spring of 1946. Ap- 

 parently, they have survived this operation; by 1947, they should be 

 large enough to test for sweetness of sap. 



The extra teaching load assumed this year made it impossible to car- 

 ry on the investigations of the sweetness of our selected trees. 



C. L. Stevens 



Two thousand maple cuttings of current season's growth were gath- 

 ered during June, 1945, from various sources as follows: (1) two high- 

 yielding trees at the Horticultural Farm; (2) two high-yielding trees at 

 Georges Mills; (3) various low-yielding trees at Foss Farm. They were 

 divided into lots for the following treatments with appropriate controls: 

 Solution dip treatments using carbowax as a carrier with these compounds 

 (1) p-chlorophenoxy acetic acid, (2) indolbutyric acid, (3) Methoxy ace- 

 tic acid, (4) B-napthoxyacetic acid. All were used in four dilutions with 

 water at 0.1 gram to 1000 down to 1,000,000 parts. In addition dust treat- 

 ments were tried as follows: Rootone, Hormodin, ,and Dow Quick-Root 

 No. 2, each alone, and with various proportions of Arasan and Spergon. 

 All cuttings were placed in indoor and outdoor beds of sand. 



Limited tests on effects of X-ravs on rooting were made in the spring 

 of 1946. 



Numerous cuttings callused in various treatments and controls, but 

 very few rooted. Only six out of the entire 2,000 rooted. This low 

 amount of rooting in comparison to other years may have been due in 

 part to the very wet spring which caused tender foliage, as there was an 

 abnormal amount of rotting of foliage in the cutting beds. The results 

 on X-ray effects were negative. 



Stuart Dunn, C. L. Stevens 



Devices and Implements Useful in Farm Logging 



A study of several devices has been made and photographs taken to 

 show the construction of various devices and implements useful in farm 

 logging. Wherever possible to obtain them, time studies, details of cost 

 and construction have been obtained. The implements or devices are 

 all in use and have proved to be useful in production as well as as eco- 

 nomical of labor. 



The following devices have been observed and studied: 

 1. Power-operated screw wedge for quickly splitting four-foot 

 lengths of wood. Using an automobile rear wheel for power the screw 

 splits dry hardwood 10" to 14" in diameter in five to 10 seconds. 



