61*0 



SUMMARY OF (TKKKXT IfKSKAHCUKS RELATING TO 



MICROSCOPY. 



A. Instruments. Accessories, etc.* 

 (1) Stands. 



Garjeanne's Simple Excursion Microscope.f — A.J. M.Garjeanne 



describes this instrument, which has been made to his designs by Messrs. 

 W. Watson and Sons, London. The weight of this Microscope, when 

 made of the ordinary brass and iron, does not exceed 1250 grm. ; but 



Fig. 74. 



this might be considerably reduced by the use of lighter metal. The in- 

 strument can be packed in a mahogany box 15 - 5xllxll cm., weigh- 

 ing 500 grm. ; the box provides room for two objectives, two oculars, 

 and some small utensils. Fig. 74 shows the stand shut up, the height to 

 the lower rim of the ocular being only 12 • 8 cm. The dimensions of 

 the foot confer great stability, and are, AB = 9'8 cm., OD = 7'8 cm. 

 The object-stage is rectangular, <s-6x7'<s cm., and is made with the 

 Nelson cut-out. A simple diaphragm-disc is below the stage. The 



* This subdivision contains (1) Stands ; (2) Eye-pieces and Objectives ; (3) 

 Illuminating and other Apparatus ; (4) Photomicrography ; (5) Microscopical 

 Optics and Manipulation ; (6) Miscellaneous. 



t Zeitschr. wiss. Mikrosk., xxviii. (1911) pp. 5G-8 (2 figs.). 



