BULLETIN 



OF THE 



WISCONSIN NATURAL HISTORY SOCIETY. 



Vol. 9. APRIL, 1911. Nos. 1-2 



LIBRARY 



PROCEEDINGS. N ^ w Y01 " 



BOTANICa 



Milwaukee, October 13, 1910. GARDEN. 



Meeting of the combined sections. 



President Barth in the chair, 36 people present. 



Minutes of the last section meeting - read and approved. 



The name of Leo Falconer, Public Museum, was presented by Mr. 

 Burrill for active membership ; Mr. Falconer was subsequently elected 

 by the Board of Directors. 



The subject for the evening was Nature Fakes : Physical and 

 Chemical. Mr. George W. Colles gave a lecture on Perpetual Motion 

 and Other Mechanical Fakes. 



Mr. Colles began with a resume of the history of nature-faking, 

 citing a number of instances from scripture, and illustrating by 

 means of black-board diagrams the various contrivances with which 

 the old pagan priests were able to astound the gullible populace. 

 Perpetual motion was defined as "moving a body against resistance." 

 The various types of perpetual motion machines, viz., overbalanced 

 wheels with weights on elbow-levers, self-winding clocks, water- 

 wheels, screw devices, self-filling chalices, compressed air chambers, 

 inclined planes, mercury-weighted balance machines, and in modern, 

 times the various electrical contrivances, were copiously illustrated 

 and explained by means of lantern slides and black-board diagrams. 



After an announcement by President Barth that Dr. Sommer had 

 requested that his scheduled lecture on Chemical Fakes be postponed 

 until next month, a motion for adjournment was presented and 

 accepted by the members. 



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