▁art istic ▁fields ▁like ▁music ▁and ▁bal let ." ▁The ▁museum ▁a ims ▁to ▁collect ▁pen is ▁spec im ens ▁from ▁every ▁m amm al ▁in ▁I cel and . ▁It ▁also ▁exhib its ▁ph all ic ▁art work ▁and ▁pen is - related ▁objects ▁or ▁" phal lob ilia " ▁such ▁as ▁l amps h ades ▁made ▁from ▁the ▁sc rot ums ▁of ▁b ull s . ▁Other ▁exhib its ▁range ▁" from ▁an ▁ 1 8 th - century ▁eng ra ving ▁dep ict ing ▁the ▁circum c ision ▁of ▁Christ ▁to ▁a ▁ 2 0 th - century ▁pl astic ▁pen is ▁pac ifier ." ▁Most ▁of ▁the ▁collection ▁has ▁been ▁don ated , ▁and ▁the ▁only ▁purchase ▁to ▁date ▁has ▁been ▁an ▁ele ph ant ' s ▁pen is ▁meas uring ▁nearly ▁ ▁long . ▁The ▁pen ises ▁are ▁either ▁preserved ▁in ▁formal de hy de ▁and ▁displayed ▁in ▁j ars ▁or ▁are ▁d ried ▁and ▁hung ▁or ▁mounted ▁on ▁the ▁walls ▁of ▁the ▁museum . ▁ ▁Sig ur ð ur ▁has ▁used ▁a ▁variety ▁of ▁techniques ▁to ▁preserve ▁the ▁pen ises , ▁including ▁pres ervation ▁in ▁formal de hy de , ▁pick ling , ▁dry ing , ▁stuff ing ▁and ▁sal ting . ▁One ▁particularly ▁large ▁pen is ▁taken ▁from ▁a ▁b ull ▁has ▁been ▁converted ▁into ▁a ▁walking ▁stick . ▁Many ▁of ▁the ▁museum ' s ▁exhib its ▁are ▁ill umin ated ▁by ▁l amps ▁made ▁by ▁Sig ur ð ur ▁from ▁r ams ' ▁test icles