I agree with much of @MathBrush’s statements. This is a wonderfully written piece that ends too quickly in a few cases.
The descriptive language for each locale is vibrant and promotes suspension of disbelief. The use of subtle visual effects makes some of the passages seem more real than most IF games accomplish.
Creating a game in this genre that really allows a player to become immersed in the world is difficult, but "To Spring Open" does the job very well.