Signature unreadable, may be S or B then J or cursive F, T or Y and with an S in the middle and possibly another S or G at the end. The word 'original' has been written at bottom of the paper in the same handwriting. The name does not seem to tally with any I have looked at in the Barbizon or Fontainebleau schools.
Tags: able, artist, BarbizonForet, De, entitled, Fontainebleau, name, Painting, Read, watercolourink