It's from the Latin for "hemp" because it was often made of hemp; add a letter & it means to take a survey
[DOC] [TLE] Hemp - Topics [PAR] Although cannabis as a drug and industrial hemp are both members of the 
species ... A survey in 2003 showed that more than 95% of hemp seed sold in the 
... Hemp seeds can be eaten raw, ground into a meal, sprouted, or made into 
dried .... Hemp, because of its height, dense foliage and its high planting density 
as a... [DOC] [TLE] Richters HerbLetter - Richters Herbs [PAR] Jan 31, 2002 ... Canadian Company Will Sue to Prove Hemp is Not Pot ...