"Notice to Perpetual Motion Seekers."--The following is a literal copy of a communication which we have received under this head. We publish it for the benefit of all concerned: "Perpetual Motion Seekers! see Coloss., ch. ii., v. 8--'Beware lest any man spoil you, through philosophy and vain deceit, after the tradition of men, after the rudiments of the world.' Ye are making the words of God of none effect by your traditions in publishing these things to the world. How can such toys and baubles as these be perpetual? See Malachi, ch. iv., v. 1--'For behold the day cometh that shall burn as an oven; and all the proud, yea, all that do wickedly, shall be as stubble.' Here is the end of them. I, the undersigned, have to inform the public, the model for making perpetual motion is to be found in that too much neglected book of models, the Bible. I called upon the Lord, and he showed it to me. I said, 'Lord, shall I show this unto them? This was the answer to me: See Isaiah, ch. xli., v. 29--'Behold, they are all vanity; their works are nothing.' I said, 'Lord, be pleased to show me some more about it.' 'Bring forth your strong reasons, saith the King of Jacob.'--Isaiah, ch. xli., v. 21. This was the answer: See Isaiah, ch. xli., v. 14--'Fear not, thou worm Jacob. * * Behold, I will make thee a new sharp threshing instrument having teeth; thou shalt thresh the mountains, and beat them small, and shall make the hills as chaff.' See also Jeremiah, ch. vii., v. 9--'The wise men are ashamed; they are dismayed and taken,' etc. See also Jeremiah, ch. ix., v. 12--'Who is the wise man that may understand this?' If there is not a wise and learned man who can show this, there is a deaf and unlearned man that will, by the blessing of God, set it forth to you. I am that deaf and unlearned man, George Lovatt, Stafford. "P. S.--Mr. Editor: I have told you what I was commanded to do. See Ezekiel, ch. iii., v. 4 to the end. Now, see thou forget it not; let those models which come from the Word of God have the first place.--Joshua, ch. xxiv., v. 15." John Bernoulli's Dissertation on Perpetual Motion John Bernoulli was born in 1667, and died in 1748. He belonged to the famous Belgian family bearing the name. His family seems to have been peculiarly prolific in men of great genius for mathematics and science. Almost any encyclopedia with any pretense for thoroughness will mention and give the sketch of the life of from five to nine members of the Bernoulli family.