abstract:Note the stopcock, glass tube at the right, and ground glass joint in this pressure-equalizing dropping funnel. An ordinary dropping funnel lacks the pressure-equalizing glass tube at the right side.
Althoughheonlydeals with snakes, Jacobssays that funnel-webs canbeaparticularprobleminAustralia-not justdropping into the bowlfromabovebut alsoapproachingfrom beneath.