Page 



Fall Work 45 



Felling 52 



Field Glasses 65 



Firs 9 3o 



Fir Flathead Borer 3l' 



Fir Girdler 33 



Fir Roundhead Boror 32 



Five-spined Engraver 24 



Flathead Borers 20 



Flathead Cedar Borer 36 



Form I 65 



Form I Data 51 



Hornfliec 14 



Host Trees 15 



How to pick Out Infested Trees 7 



Hylesinus 6,16,18,35 GO 



Hylurgops 39 



Incense Cedar ' 36 



Infestations 3 



Insects 15 



Ipidae 20 



I iis 6,14,19,39 



Ips confusus 14,15,17,24,42 



Ipn enarginatus -17,29 



Ips concinnus 15*17 30 



Jeffrey Pine 9,17,48 



Jeffrey pine Beetle 2b' 



Large Kn.r raver Beetle 29 



Li')ocedrus 16 



I in 03 o 



Loclgepole Hn- raver Beetle 30 



Lodgepulr , 3 ine 9,17 4P 



Magdalis 6 



Melanophila 20, 39 



Melanophila drumaondi 16^ 31 



Melanophila gentilis 14^ 15,17,2! 



j 



Methods of Control -------------------------- 46 



Moth" --------------------------------------- 14 



Mountain Pine Beetle ------------------------ 22 



