So far the suggestions I have received on the glass vessels visible 
on New South's website (http://www.newsouthassoc.com) are: glue 
bottles, boot black bottles, and some sort of medicine jar.  I have 
gotten some good suggestions for references, but would still 
appreciate more.

Several people have asked for context.  The context of the vessels 
is a ca. 1750-1760 privy in downtown Charleston, SC.  There was 
some 19th Century overburden that was removed with a backhoe, 
although some 19th Century material did end up in the upper level 
of the privy.

Susan Travis