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NUMBER XXX. 

 NOVEMBER 1800. 



ILLUSTRATED WITH 



THE FOLLOWING ENGRAVINGS BY MB. LOWRYs 



j. A Quarto Plate reprefenting various Apparatus employed by 

 Dr. Hsrfchel in his Experiments on Heat and Light. 



a. Figures illustrating Mr. Wood's Examination of St. Pierre's 

 Theory of the Udesj and a Reprefentation pf a blind Eye 

 reftored to Sight by a chirurgical Operation. 



LONDON. 



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