Sentence:  Not only do I think that they must be read in conjunction, but the usage which has followed the Union has, in my judgment, both interpreted them when so read, and has by <WSD>contemporanea expositio</WSD> confirmed the view that they ought to be so read. 
Meaning of the word marked with <WSD> tags:  The doctrine that the legal opinions of the time a document was written should be used to interpret laws in preference to more modern formulations.