>Purchase some liquid photographic emulsion from your local photographic
>store, If they don't have it try a bigger store in a larger city.

As an additional comment, your favourite EM supplier will have
liquid autoradiographic emulsion (Ilford L4 or similar) if you
just get blank looks from the photographic supplier.  But if
you want a 'true' image on the curved surface you'll need to
use a distorting lens to curve the field rather that just stopping
your enlarger down.  You could experiment with a meniscus lens
in front of the enarger.

                                                        Guy Cox

Dr. Guy Cox,   |                    ooOOOOOOoo
E.M. Unit, F09 |        #       oOOOO  |  |  OOOOo       #
Univ of Sydney |       ###    OOO|  |  |  |  |  |OOO    ###
NSW 2006,      |       ###  OOO  |  |  |  |  |  |  OOO  ###
Australia      |       ### OO |  |  |  |  |  |  |  | OO ###
Phone:         |      #####   |  |  |  |  |  |  |  |   #####
+61 2 9351 3176| =====#####============================#####=====
Fax:           |      #####                            #####
+61 2 9351 7682|    ~~#####~~~~~~~~~~~~~~~~~~~~~~~~~~~~#####~~