J. Smallwood asks about chrome alum gelatin adhesive.
Rather than make it up, it might be easier to purchase it. It is available from Surgipath, their catalogue #  03105. You just add a squirt to your waterbath. Surgipath is located in Canada at 18 Bunting Street, Winnipeg, Manitoba R2x 2P6 (800) 665 7425. (Sounds like a cold place!)If you still want to make it up, email me privatly and I will send the formula.

Mike Titford
USA Pathology
Mobile AL USA