Sentence:  In the old <WSD>days</WSD>, [...], he gave no evidences of genius whatsoever. He never read me any of his manuscripts, [...], and therefore my lack of detection of his promise may in some degree be pardoned. But he had then none of the oddities and mannerisms which I hold to be inseparable from genius, and which struck my attention in after <WSD>days</WSD> when I came in contact with the Celebrity. 
Meaning of the word marked with <WSD> tags:  A particular time or period of vague extent.