A plaster cast of the type is, when dry, saturated with shellac varnish and redried.
Among plants from Lower Triassic strata there are a few which form connecting links with the older Permo-Carboniferous flora; of these we have a species, described by Blanckenhon as Sigillaria oculina, which may be correctly referred to that genus, although an inspection of a plaster-cast of the type-specimen in the Berlin Bergakademie left some doubt as to the sufficiency of the evidence for adopting the generic name Sigillaria.
Full weight bearing can be allowed without crutches, splint or plaster cast.
The impressive thing about this case was that Jerry made a plaster-cast of the footprint.
