[dwig]

I agree with Doitsu that it looks very Garamond-esque. The lower case t's upper left quatrant of the intersection between the vertical stroke and the crossbar are a major clue. Also the serifs on the capital S point toward a Garamond. The numerals are the Old Style non-lining style pointing to a Garamond Old Style, though most Garamonds dont close the bottom loop of the numeral 9. The sample has a moderately small X-height which is not shared by most modern electronic variants of Garamond.

Given that the baseline line in the sample is ragged, this appears to be from a scan of a printed book. This means that it is totally impossible to find exactly the same font in electronic form. Such things do not exist. Even the foundries that cloned their own metal fonts into electronic form altered the letterforms in the process. Also, the electronic kerning tables don't replicate the metal type's letterspacing, generally yielding improved appearance.

If you intend to use this in an ebook, be sure that the font you choose is licensed to allow embedding or is totally free to redistribute.