David, I have been working on a U.S. Army site for the past 14 years, but do not find the sort of pattern you are interested in. Fort Rosecrans was built in 1898 and most of the trash was formally moved to dump that is now in a Navy "explosive arc" and not avail- able for investigation. The Army layers cover a 19th century shore whaling camp that was erected on the ruins of a 18th century Spanish cannon battery. It is the shore whaling station that contains data of interest. We are also about 30-feet from the water and an easy throw for empty bottles. Yet, we do find some wine, ale, and champagne bottles in the midden. In 1991, we were asked by the Navy to test about 1200 feet east on a spit of land known as Ballast Point. The dig yielded 1860-1886 trash pits loaded with bottle glass. The report is not back yet, but I recall that instead of dumping the refuse in the water the Asian cook for the whalling company just filled the pit. We have loads of wine and champagne glass, but none of the ceramic ale bottles more common in the Anglo Whaler's refuse pits. Of course, I am not able to compare military versus civlian consumption. I expect this is going to be far more complicated than you expect. I would expect the ethnicity and social status of the civilian would bear heavily, as well as individual habits. Ron May c/o [log in to unmask]