200 



THE MICROSCOPE. 



be a portion of an injected animal, it is better to pin it 

 out on a leaded cork, covered with white wax, and im- 

 mersed in a water-trough, as in fig. 140. The dissec- 

 tion of delicate vegetable structures is better carried 

 on under water. 



Dissecting Needles, Knives, and Scissors. In addition 



FIG. 139. Baker's Student's Dissecting Microscope. 



to forceps, needles, and knives, scissors are necessary 

 for purposes of dissection. The most useful, straight 

 and curved, are shown in fig. 141. In dissections 

 under the microscope, the curved-pointed pair / will be 

 convenient. In all the points should fit accurately 

 together. 



