214 TIIK 



AXD DEVELOPMENT OF THE MICROSCOPE 



We note one admirable feature of the mechanical finish of the 

 mi(Toscope> of this lirin. which is. that they avoid sharp angles and 

 knifelike edges to all their instruments. This looks a trifle, but the 

 ii-e of t he microscope with saprophytic, pathogenic, or other infective 

 material requires the utmost caution that the skin of the hands 

 should be unbroken, and there can be but little doubt that all 

 unconsciously the edges and corners of microscopes finished to the 

 just pride of the mechanic do often break the skin, and are wisely 



1 ''" ''i'l- l-;ui,rli :ui(l Lomb's sub-stage, separated to show construction. 



and happily worked into rounded edges in the instruments of these 

 distinguished makers, and. we may add. without the slightest loss 



"' 'hat appearance of high finish which has al\\a\s been correlative 



\\ it h t he manufacl ore of microscopes. 



I Cue now look al the No. I -land of t he Spencer Lens Company. 

 V.. shall tind again that t he model of Oberhatiser 



to and the instni n1 is of the (liird class. Thi> 



microscope is illustrate, I j,, IJ.T. 170. |, ; s |,eautifully ma<l(\ and 

 the horseshoe base has a -till longer ( claw ' than those of Bausch, 



