2* Ofa wood cent 



remove 1)?. v/srized iron strip. This was primarily done 

 to give greater st snail space by means of t:.e 



iron , so that the b M -jlamp of the "bof^rd could oorne 



closer together, allowing the dirt to be pushed in closer 

 to the tipper ps-rt of the stem of 1 .'..ant than T?ould havr 



otherwise -ible 



he board ie V losed by automatic spring 

 ol" "bh the operation :ins the 



rd b;^ ;: thumb BG , i the I^le 1 



4. i p iG to If feet long 



instead of elgh 3 iNflHRl^MP 131 ^ 8 B ' d & 



to sizty-^Hjl^. result ing ir- Dicing of one end one -third 



inches. The number of notches in the boari st 



by t:i shcxrH :: to thread and 



plant a bo^rd* With this nombe boarc , eJ e . threader 



ter it; the c 



to the boar.:', so that 



vrhen set on the e: the open trench, it will i ; n 



tlat position v/hile t being tamped 



r i ! h:i 1^ one : .--:. dor to each 



im: : 



3?he threa: er v/hich has 



on placed ;.n 1 wings opeirjbj 



r, toward Mr, \vjth his : 



-39- 



