He furthermore stated that lead was an unmechanical metal for a battery, being heavy and lacking stability and elasticity, and that as most metals were unaffected by alkaline solutions, he was going to experiment in that direction.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
I see that it is a machine in this respect, that it is set going by a force exterior to itself-the warmth of the sun acting upon it, and upon the moisture in the soil; but it is unmechanical in that it repairs itself and grows and reproduces itself, and after it has ceased running can never be made to run again.
"The Breath of Life"
John Burroughs
We can only look upon a living body as a machine by forming new conceptions of a machine-a machine utterly unmechanical, which is a contradiction of terms.
"The Breath of Life"
John Burroughs