Scanning glass negatives

[bach]

Well, I have a bunch of glass negatives I need to scan, there all about 3.25 x 4 inches. Right now I have a Canon Lide 600F that I love, but it's not helping me here. Can someone suggest a scanner or adapter where I can scan these negatives? I cannot make prints from them, I don't have the means, would rather just get a different scanner. There must be a way to scan these, any advice would be great, thanks!