Deceased?--Diagramming Sentences

Remember high school and those English classes when time was spent diagramming sentences? I'm not sure if such an exercise was successful and I am not even sure such exercises are being done anymore, but they could certainly be interesting.

A sentence from Nathaniel Hawthorne's The Scarlet Letter...

"In my native town of Salem, at the head of what, half a century ago, in the days of old King Derby, was a bustling wharf--but which is now burdened with decayed wooden warehouses, and exhibits few or no symptoms of commercial life; except, perhaps, a bark or brig, half-way down its melancholy length, discharging hides; or, nearer at hand, a Nova Scotia schooner, pitching out her cargo of firewood--at the head, I say, of this dilapidated wharf, which the tide often overflows, and along which, at the base and in the rear of the row of buildings, the track of many languid years is seen in a border of unthrifty grass--here, with a view from its front windows adown this not very enlivening prospect, and thence across the harbour, stands a spacious edifice of brick."

For more information see Eugene R. Moutoux's web site.