Jonathan Good wrote a proposal for a heraldic coat of arms for Dartmouth College in 1995. This website has linked to Good’s pamphlet at several locations over the years and is happy to host it once again.
As the proposal explains, the new symbol would be an adjunct to the existing coat of arms rather than a replacement for it.
The celebration of Dartmouth’s 250th anniversary in 2019 would be a fine time to adopt the coat of arms. At the last big college celebration of this kind, the 1969 bicentennial, the school adopted the lone pine device that has since become widespread.
The school might even petition the College of Arms for a grant of honorary arms, as has been done by George Washington University and Hampden-Sydney College.
A few of Scott Meacham’s own cut-and-paste efforts to render the proposed arms:
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[Update 11.17.2012: Broken link to HSC page fixed.]
[Update 11.30.2010: GWU link corrected.]