118 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



Fir.. 3. 



only that on the right side being shown in fig. 4. There are four 

 troughs k k' (two on each side). Three of these' serve for reagents 



and ntonsils, wliile the fourth k is 

 for washing slides, &c. At h is a 

 contrivance for heating objects 

 previous to their examination (two 

 shown on a larger scale in section 

 in fig. 5). They are placed on tho 

 supports at I when they are re- 

 quired to cool. The flaps 1, 2, and 3 

 cover the table when not in use, 

 and can be used separately or 

 together. When all are closed, 

 only the Microscope stands out 

 above the level of the table, but if 

 required this can also be removed 

 and put in a box under the lamp, 

 a board filling up the opening in 

 the top of the table. The table 

 also contains the necessary appa- 



Fin. L 



ratus for a hydrostatic blast or other means for obtaining the 

 necessary air currents. 



For experiments at very high temperatures a modification of the 

 stage is made use of, shown in fig. 6. The object is placed on a small 

 super-stage, and the objective is protected by a glass screen, through 

 which cold water passes by means of the two tubes which are con- 

 nected with i i in fig. 4. Two electrode holders with quicksilver cups 

 are shown in the fig. for experiments on electrolysis of melted salts. 



