"then I read Lady into Fox until he returned"
'Lady into Fox' (a picture named after Garnett's novel)
Creative Commons Attribution'Lady into Fox' (a picture named after Garnett's novel) - Credit: sammydavisdog, Flickr

 Lady into Fox (1922) is a novel by David Garnett (1892-1981). 

It is an unusual and enigmatic story of a newly-married man whose wife turns into a fox, after which he continues to try to maintain their relationship.

It was well-received in its day, winning the James Tait Black Memorial Prize in 1922, and the Hawthornden Prize in 1923. 

Full text of the novel