XXV111 I N T R O D U C TI O X . 



tives which we exclusively hold) are made in New Depart- 

 ure style i*t $2.50 each. All the emblems in the degrees of 

 Entered Apprentice, Fellow Craft and Master Mason, 

 arranged in accordance with the American system of lec- 

 tures, are distinctly shown on thirty plain glass slides. 

 The price of the set is ten dollars. These and some other 

 technical subjects are not catalogued in detail. 



Views of interest in different parts of the world, named in 

 class vi, are among our most beautiful slides ; and the list 

 might be greatly extended to advantage, were it not that 

 all subjects that admit of being taken directly from nature 

 are now mostly preferred in Levy or other plain slides. 



The Scientific Department of Part Second can hardly be 

 better; the Scientific Sciopticon slides of Part Third, how- 

 ever, cover much more ground for less money, and in this 

 direction we are resolved that something more than has 

 been done shall be done. The same departure from the 

 old three-inch size is carried into statuary and the wood- 

 mounted scientific slides. The increased cost prevents re- 

 duction in price. 



Great care has been taken to catalogue, in Part Third, the 

 most desirable selections from the almost endless variety of 

 foreign and domestic glass slides, and to arrange them in 

 natural order. 



It will be observed that we not only claim to represent 

 improved apparatus, but that our prices, where concession 

 is admissible, range very low. 



We are gratified by the growing favor with which the 

 Sciopticon in both forms is received, and we choose not to 

 load it down in its course with lame accessories, poor slides, 

 high prices, or unlooked-for contingent charges. 



