F 

 SECTION XVIII. BIOLOGY. 



SOUTH GALLEKY, UPPER FLOOR, ROOM ( 



I. -MICROSCOPES AND ACCESSORY APPARATUS. 

 (a.) MICROSCOPES OF HISTORICAL INTEREST. 



3510. Compound Microscope, invented and constructed 

 about 1590 by Zacharias Janssen, spectacle-maker, at Middle- 

 burgh, Netherlands. 



The Scientific Society of Zeeland, at Middleburgh. 



3511. Two Microscopes, by Jan van Musschenbroek, a 

 Dutch mechanician (b. 1687, d. 1748). 



Professor Dr. P. L. Rijke, Ley den. 



3512. Microscope, of silver, used by Anthony van 

 Leeuwenhoek, the Dutch Philosopher (b. 1632. d. 1723), in his 

 investigations, and probably constructed by him. 



Professor Dr. J. A. Boogard, Director of the Anatomical 

 Museum., Academy of Ley den. 



3513. Wilson's Pocket Microscope, with three single 

 powers, about ^, ^, and J inch, and box of objects of an early 

 period. William Sykes Ward. 



3514. Pocket Microscope, for opaque objects, four powers 

 in Lieberkujins 1 in.. J in., J in., and J in. William Sykes Ward. 



3515. Achromatic Microscope, by Oberhauser, of Paris, 

 with powers of an early period ; fine adjustment, achromatic con- 

 denser, and a curious double movement stage. 



William Sykes Ward. 



3516. Compound Microscope, by Dollond, formerly be- 

 longing to Josiah Wedgwood, potter. It is not inclinable; 

 provided with two movements ; the stage is rude in mechanism. 

 There are six object-glasses, frog-plate, and other appliances. 



Robert Garner, F.R.C.S. 



3517. Grand Microscope, with solar reflector and appli- 

 ances. Made by Benjamin Martin about 1740. 



The Committee, Royal Museum, Peel Park, Salford. 



The details of this extraordinary microscope are described in full in a paper 

 by Mr. J. B. Dancer, F.R.A S., affixed to the instrument. 



