350 NINETEENTH REPORT. 



SUMMARY. 



It is somewhat hazardous to express a definite opinion on the ad- 

 visability of growing seedlings with no shade and no water from the 

 economic standpoint, before the mortality per cent due to transplanting 

 and passing the winter has been ascertained. If the percentage is no 

 higher, or but a little higher, in the case of III than in Nos. II and IV, 

 then No. Ill is clearly the advisable and economic method in this locality. 

 If, however. No. IV shows a much lower mortality, then the extra ex- 

 pense incurred in daily watering is justifiable. Experiments to determine 

 tliis mortality. rate are now being conducted and will be reported on at 

 their completion in the spring. General botanical studies would indicate 

 in advance that No. Ill would suffer less from a severe winter than either 

 II or IV, as these seedlings have had their tissues brought to a mature 

 condition eai'ly by a medium condition of moisture, whereas those which 

 were either shaded or watered will enter the winter in less resistant 

 condition. 



LITERATURE CONSULTED. 



Toumey, James W. Seedling and Planting, pp. i-xxxvi, pp. 3-l<43, ill. 

 John Wiley & Sons, New York, 191(5. 



Burns, George P. Development of white pine seedlings in nursery 

 beds. Vermont Ag. Exp. Sta. Bui. 178, pp. 17, ill. Burlington, 1914. 



Relation of shade to evaporation and transpiration in 



nursery beds. Vermont Ag. Exp. Sta. Bui. 181, pp. 27, ill. Burlington, 

 1914. 



Tillotson, C. R. Forest planting in the Eastern United States. U. S. 

 Dept. of Agr. For. Ser. Bui. 153, p. 38, ill, 1915. 



