Benjamin Robbins Curtis, Salmon Falls Manufacturing Company v…
“ It is one thing to show that a party, who appears by a writing to have made a contract, made it as an agent, and quite a different thing to prove by parol that he made a purchase when the writing is silent as to that fact. The duty and power of the court is a duty and power to give a construction to what is written, and not in any case to permit it to be added to by parol. Least of all when a statute has required the essential requisites of a contract of sale to be in writing, is it admissible, in my judgment, to allow the fact, that the defendant made a purchase, to be proved by parol. ”
