Their appearance would have been improved and examination facilitated by a thorough scrubbing, for they were just as they had been taken from their respective resting-places, and it was difficult to decide whether their reddish-yellow colour was an actual stain or due to a deposit on the surface.

In any case, as it affected them all alike, I thought it an interesting feature and made a note of it.

They bore numerous traces of their sojourn in the various ponds from which they had been recovered, but these gave me little help in determining the length of time during which they had been submerged.

They were, of course, encrusted with mud, and little wisps of pond-weed stuck to them in places; but these facts furnished only the vaguest measure of time.
Some of the traces were, indeed, more informing.

To several of the bones, for instance, there adhered the dried egg-clusters of the common pond-snail, and in one of the hollows of the right shoulder-blade (the "infra-spinous fossa") was a group of the mud-built tubes of the red river-worm.