INDEX 



177 



PAGE 



Micrography continued. 



Earliest micrographic engraving . 139 

 Micrographic copy of seal of Co- 

 lumbia College 139 



Peters' machine 141 



Lord's Prayer written at rate of 22 



Bibles to square inch .... 141 



Webb's fine writing 142 



Calculation in regard to .... 143 



Microphotographs by Dancer . . 144 

 Pigeon- post in Franco-Prussian 



War 146 



Millionaire, to become a 166 



Miracle dial of Ahaz 133 



Morgan. See De Morgan. 



Morton, President Henry 66 



Motion, perpetual. See Perpetual 



motion. 



Muir, Prof. On Archimedes ... 14 



Musitanus, Carolus 96 



Nail problem 164 



Nicomedean line 29 



Orffyreus his real name 77 



His fraudulent machine 77 



Overbalancing wheels 43 



Paint, luminous 102 



Palingenesy 106 



Patent office U. S. and perpetual 



motion 42 



Pen mightier than the sword ... 173 



Perpetual lamps 100 



Perpetual motion 36 



What the problem is 37 



Clock that requires no winding . 38 



Watch wound by walking ... 39 



Clock wound by tides 41 



By electricity 41 



Absurdities 42 



Overbalancing wheels 43 



Dr. Young, on 44 



Bellows action 45 



Hydrostatic paradox 46 



Bishop Wilkins 48 



Archimedean screw 49 



Archimedean screw, by mercury . 51 



Congreve's, by capillary attraction 53 



Tube and balls 56 



Tube and rope 59 



Magnetism . , 61 



PAGE 

 Perpetual motion continued. 



Self-moving railway carriage . . 63 



A child's perpetual motion ... 64 



Fallacies 65 



Liquid air 65 



Bisulphide of carbon 66 



Frauds 69 



Keeley motor 69 



Geiser's clock 71 



Adams 71 



Redhoeffer 72 



Lukens 72 



How to stop the machine ... 73 



Marquis of Worcester 74 



Dircks' model 75 



Orffyreus 77 



Possibility of 78 



Peters' micrographs 141 



Philosopher's stone 97 



Phosphorus, discovery of 101 



Pigeon-post 146 



Population, a question of 165 



Power, the, of the future 40 



Ptolemy, on the circle 15 



Puzzles, arithmetical 170 



Railway carriage, self-moving ... 63 



Ramsay, Sir William 89, 98 



Ratio of diameter to circumference 



carried to 127 places 17 



Redhoeffer 's perpetual motion . . 72 



Rosicrucius 100 



Rutherford 16 



Schott, Father, and palingenesy . . 107 



Schweirs, Dr 52 



Scott, Michael, and his slave demons 6 

 Scott, Sir Walter, legend of the 



great Wizard 6 



Powder of sympathy 112 



Self-moving railway carriage ... 63 



Senses illusions of 148 



Taste and smell 149 



Heat and cold 150 



Hearing 150 



Touch 150 



Sight size of spot 152 



Length of lines 153 



Direction of lines 154 



Objects seen through hand ... 156 



Looking through a brick .... 158 



