I realise my post is not as clear as it could be.
Norton Bear Contact Cement - is a liquid... been around for decades and what i would normally ask for if i wanted contact cement.
Norton Gelfix Contact Cement - is a gel... identical in every way to the liquid but with an additive to make it into a Gel for use on vertical surfaces.
Both are "Contact Cement" and suitable for what the Prof described.
Both are made in Lidcombe NSW Australia... by Norton Abrasives and have the little Norton Bear on the (green) can.
Greg Frazer