Al, it's not the stereogram's fault. It's my eyes; they diverge sufficiently that I can't bring the larger molecules into focus completely. I'm a dud at a stereogram party, too. Everybody's got to have a flaw, I guess. I went through six years of college and two degrees and only two people ever realized I couldn't see properly through binocular scopes. I should have been an astrononer, I suppose. Or applied for a job as Werner Klemperer's understudy. :-)