Sentence:  During the rest of the summer my scholarly mania for making plaster casts and spatter prints of Catskill flowers and leaves was all but surpassed by the constantly renewed impressions of Jessica that my <WSD>mind</WSD> served up to me for contemplation and delight . 
Meaning of the word marked with <WSD> tags:  that which is responsible for one's thoughts and feelings; the seat of the faculty of reason