﻿34 BULLETIN 1136, U. .-. DEPARTMENT OF AGRICULTURE. 



Table 2. — Hardicvod schedules I to S. 



[D*»drv-bulb tampemftote In degrees F.; W— wet-bulb temperature in degrees F.; H=percent relative 



humidity.] 



Moisture per cent. 



Bcbeduli 



1. 



Schedule '-'. 



Schedule 



3. 



Schedule 4. 



D. 



W. 



11. 



D. 



W. 



H. 



D. 



W. 



H. 



D. 



W. 



n. 





140 

 145 

 1 50 

 loo 

 100 

 165 

 170 



132 

 135 



137 

 136 

 135 

 127 

 116 



80 

 75 

 70 

 60 

 50 

 35 

 20 



135 



140 

 145 

 150 

 155 

 100 

 165 



128 

 130 

 133 

 132 

 131 

 124 

 112 



80 

 75 

 70 

 60 

 50 

 35 

 20 



130 



135 

 140 

 145 

 150 

 155 

 160 



123 



126 

 128 

 128 

 127 

 124 

 115 



80 

 75 

 70 

 60 

 50 

 40 

 25 



Las 



130 



135 

 140 

 145 

 150 

 155 



118 

 121 

 123 

 123 

 122 

 120 

 111 



80 



in 



75 



■M< 



70 



25 



60 



20 



50 



15 



40 



10 to final 



25 







Moisture pet cent. 



Schedule 5. 



Schedule 6. 



Schedule 7. 



Schedule 8. 



D. 



w. 



H. 



D. 



W. 



H. 



D. 



W. 



H. 



D. 



W. 



II. 





120 

 125 

 130 

 135 

 140 

 145 

 150 



113 

 116 

 119 

 121 

 120 

 119 

 112 



SO 

 75 

 70 

 65 

 55 

 45 

 30 



115 

 120 

 125 

 130 

 135 

 140 

 145 



109 

 111 

 114 

 116 

 116 

 115 

 108 



80 

 75 

 70 

 65 

 55 

 45 

 30 



110 

 115 

 120 

 125 

 130 

 135 

 140 



105 

 109 

 111 

 112 

 112 

 111 

 108 



85 

 80 

 75 

 6.5 

 55 

 45 

 35 



105 

 110 

 115 

 120 

 125 

 130 

 135 



101 

 104 

 107 

 109 

 110 

 109 

 107 



85 



40 



80 



30 





25 



70 



20 



GO 



15 



50 



10 to final 



40 







Table 3. 



-index of drying schedules to use with various hardwood species (up 

 to 6/.'i inch thick.) 



Species. 



Hard- 

 wood 

 sched- 

 ule. 



Remarks. 



Species. 



Hard- 

 wood 

 sched- 

 ule. 



Remarks. 



Ash 



2 

 1 

 3 



1 

 5 



2 

 5 

 2 



3 



2 



2 



2 

 3 

 2 

 5 



Relieve stresses often. 



Squares or quartered 

 stock only. 



Relieve stresses frequent- 

 ly- 

 Including ''sap gum." 



Holly, American.. 

 Hornbeam (iron- 

 wood). 



4 

 4 



5 

 4 

 4 



3 



6 



7 

 7 



S 



5 

 5 

 1 

 5 

 5 

 2 





Basswood 





Birch 











Butternut 



Cherry, black... 



Mahoganv 



Maple (hard and 



soft). 

 Oak.redand whit e 

 Do 



Northern highland stock. 







Cotton gum (1u- 



pck>. 

 Cotton wood 



Elm 



Do 





Do 





Osage orange 



Persimmon 



I'oplur, yellow 













nackberrv 



Walnut, black 



Willow 











SOFTWOOD SCHEDULES. 



Because of large variations in the initial or " green " moisture 

 content existing among the various softwoods, it has been found 

 expedient to divide softwood schedules into several divisions, as 

 shown in Table 4. The divisions of each schedule differ from one 





