THE WAYS IN WHICH GLASS CAN BE USEFUL AS EVIDENCE ARE CONSIDERED - AS TRACE EVIDENCE LINKING A SUSPECT TO THE CRIME SCENE AND TO PROVIDE CLUES AS TO HOW THE CRIME WAS COMMITTED; A DISCUSSION OF THE BREAKING PHENOMENA IS FOLLOWED BY AN OUTLINE OF ANALYSES TO BE CARRIED OUT IN AN INVESTIGATION OF FORCIBLE ENTRY INTO A BUILDING THROUGH GLASS. THE EXAMINATION AND INTERPRETATION OF GLASS FRAGMENTS IN AUTO-RELATED CRIMES, CASES OF ASSAULT WITH A GLASS BOTTLE, AND SHOOTINGS INVOLVING WINDOWS OR OTHER GLASS ARE ALSO BRIEFLY REVIEWED. A DISCUSSION GUIDE AND QUESTIONS AND ANSWERS BASED ON THE TEXT ARE INCLUDED.