I've only been processing for a couple of months and decided to try Rodinal (Adonal "original Rodinal formula). I've made plenty of mistakes in my learning process but this I've never seen before: like some kind of chemical was eating at the emulsion. There are three photos in a row, bracketed: final one, too dark, has no damage. First one entirely damaged and the second partially. Canon P with 50/1.8, not that this matters. Tri-X, not too old; processed same day in 1:40 dilution at 68F for 10-3/4 minutes agitated by two or three turns of the Paterson stick every 30 seconds; one minute Kodak stop bath agitated whole time; nine minutes of Kodak fixer agitated intermittently. Hung to dry overnight; cut and sheathed this morning. Here are the photos. Any suggestions are MOST appreciated.