RECREATIONS Wrril Till-: MICROSCOPIC 



193 



Some Old-time Microscopes. 



Ev TuiconoKK w. SMITH, X ai'i;r\'illE, ill. 



The accompanying illustration shows 

 some old-time miscroscopes which are in- 

 teresting examples of early types of the 

 instrument. For reference, these may be 

 numbered from left to right, i, 2, 3 and 4. 



Xo. I is a large miscroscope, 19 inches 

 high, made almost entirely of wood, and is 



held in place by a metal ring in the wood- 

 en objective mount. 



No. 2 is a small miscroscope made by 

 W. Gary of London about 1826 and is 

 stag'e-focusing. 



No. 3 is a miscroscoi)e made by Xachet 

 of Paris about 1850. Instead of having a 

 joint for inclination, there is a prism, 

 in the body-tube for tlie more convenient 



IXTERESTIXG EXAMPLES OF EARLY TYPES OF MICROSCOPE. 



probably a Nuremberg miscroscope dat- 

 ing from about 1740. Some wooden 

 "sliders" are shown in front of the in- 

 strument, each "slider" containing sev- 

 eral specimens mounted dry between two 

 pieces of ordinary glass held in place by 

 metal rings. The objectives, of which 

 there are three, consist of a single lens 



use of the instrument. This stand has a 

 mechanical stage of peculiar construction 

 and the objectives are of the achromatic 

 French triplet variety. 



No. 4 represents the Culpeper model 

 which was made bv several London opti- 

 cians during the eighteenth century, this 

 particular microscope having been made 



