iii 
Pagk. 
Chapter VI — General Recommendations as to Methods of Stacking and 
Protecting Timber During Air Seasoning ... ... 62 
(i) Sea.soning Slieds for Refr.actory Woods ... ... 63 
{a) Design and Construction ... ... 63 
(ti) Capacity ... ... ... 64 
(c) Requirements of Various Species ... ... 65 
(ii) Tlie Treatment of Non-refractory Woods ... 67 
{iii) Piling Practice ... ... ... ... 69 
(a) Foundations ... ... ... 69 
(b) Pitch of Stacks ... ... ... 70 
(c) Sorting of Lengths and Spacing ... ... 70 
(d) Crossers ... ... ... 70 
(e) Horizontal versus Vertical Piling ... ... 71 
Chapter VII — Sanitation of Lumber Yards and Timber Depots ... 72 
Chapter VIII — Season of Year for Girdling, Felling and Con- 
version ... ... ... ... 73 
(i) Girdling and Felling ... ... ... 73 
(iij Conversion ... ... ... ... 74 
Chapter IX — The Treatment of Logs in Storage when Prompt Con- 
version is Impossible ... ... ... 75 
(i) Log Ponds ... ... ... ... 75 
{ii) Storage on Land ... ... ... ... 75 
(a) Skidding ... ... ... ... 75 
{b) Sheltering ... ... ... ... 76 
(c) Girdling ... ... ... ... 76 
(d) Barking ... ... ... ... 77 
(e) Protecting the Ends ... ... ... 79 
Chapter X. — D.image to Timber by Insects — by C. F. C. Beeson, M.A., 
h.E.S., Forest Entomologist ... ... ... 81 
(ij Borers of Living Trees ... ... ... 82 
(ii) Borers of Fel'ed or Girdled Trees ... ... 84 
(iii) The Liability ot Timbers to Insect Attack ... 87 
(a) Locality ... ... ... ... 87 
(b) Date )f Felling or Girdling ... ... 87 
(c) Treatment of Logs after Felling ... ... 89 
Summary anh General Conclusions ... ... ... 92 
Appendix I — Seasoning Defects Tabulated by Species ... ... 96 
Appendix II — Instructions to Field Officers for Conducting Ex- 
periments ... ... ... ... ... 140 
