Fig. 72. Parasitized Insects. Treatmext of Pence Posts. 



a. Cabbage btig parasitized, by Cordyccps nutans, h. cahha^e bug j^tasitized by 

 Cordyceps sobolifera (a. and &. after Lloyd), c. watermelon apbids parasitized by 

 Lysiphldms testaceipes, showing circular holes on the backs of the aphids through 

 which jaiasite emerged, d. a female of L. ieslaceipes in the act of laying her eggs in 

 tie back of a green aphis (after Webster), e. Creosoted post after a period of service, 

 J. a willow post treated, 4 hours in hot creosote and 10 hours in cold; set June 13. 

 1905 , exanuned November i, 19141 and showing practically no_ deterioration after 

 9}^ years' service. 2. A split soft maple post treated 4 hours in hot creosote and 

 10 hours in cold; set in 1905 and examined November is, 1914- The post was set 

 bdow the creosote line ami some decay has entered beneath the creceote shelL 3. 

 A 5-inch split cottonwood post given a creosote bath treatment, set in 1905 and 

 examined in 1914. The post shows practically no decomposition in either top or 

 bottom. 4. All S-inch ash post split in half, given butt creosote treatment of 6 

 hours in hot Mid 12 boats in cold, set 1905 and examined in November. 1914. The 

 cietKOted bottom is sound, j^netration on the heart wood surface was less than in 

 the sap wood- The heart wcwd portion of this post wiH undoubtedly give away first. 

 The untreated top is in esculent condition- j. A 4j^inch untreated vrhite cedar 



_ : ^2__ .. Jll_ , „^ ' . ,-^„.,. /. A small treating tank in operation- (e. and /. 



