Being protected by the water from the rapid subaerial erosion which sharpens the features of the land, and subjected to the regular accumulation of deposits, the whole ocean floor has assumed some approach to uniformity.
According to Lilly, this pale violet star sharpens the understanding, memory, and makes men industrious.
Following a rescue boat, which stops its engine without warning, certainly sharpens the reaction of boat crews.
It will cut a very fine sliver of paper, sharpens pencils well and is just as good on thicker pieces of wood.
It protects the eyes, sharpens visual acuity and clarity, and indeed enhances performance by keeping visual distortions and distractions to a minimum.