SCIENTIFIC INQUIRY. 13 



Resides not in each block ; — a Godhead reigns." 



And, if a God there is, that God how great ! 

 How great that Power, whose providential care 

 Through all these bright orbs' dark centres darts a ray ! 

 Of nature universal threads the whole ! 

 And hangs creation like a precious gem, 

 Though little, on the foot-stool of His throne." 



1Rote6 on tbe lEybibition of flDagnifieb 

 ©bjects* 



By Carey P. Coombs, M.D. 



I SUPPOSE that there are few workers with the microscope 

 who do not desire to show to others what they see themselves. 



And this is not easy to accomplish when there are many to 

 whom an object is to be shown. If there are a number of 

 observers and many slides, several instruments and demonstrators 

 must be procured ; and there are points of detail in the manage- 

 ment of such a demonstration, which can only be learned by 

 experience. Let it be clearly understood that I state what I have 

 done, to elicit from other members of the " Postal Microscopical 

 Society" and readers of this Journal their practice in similar cases. 



On those occasions on which I have shown many objects to a 

 meeting, I have used three or four microscopes on as many tables, 

 with a collection of mounted objects suitable for the power of the 

 object-glass borne by each instrument. For instance, to a micro 

 scope with a quarter-inch, a selection of diatoms, plant-crystals, 

 and cuticles are apportioned. The microscope bearing the half- 

 inch is fitted with the polariscope, and objects which will be best 

 seen with the aid of this accessory, are placed on its table. 



In examining the sUdes sent in our boxes, I have often noticed 



