TABLE OF CONTENTS. xv 



CHAPTER VIII. 



PAGE 



CUTTING AND MOUNTING MICROSCOPIC SECTIONS OF 



INSECTS AND MOUNTING THEM WHOLE, ETC. 294-325 



Fixation of the histological elements, 295 



Dehydration, 295 



Embedding, staining, and cutting, 296 



Mounting sections, 300 



To render small insects or larvm transparent, 301 



Mounting transparent aquatic insects, 301 



Transmission, preservation, and mounting Aphides and similar 



insects, 303 



Thomas W. Starr's method of preparing and mounting with pressure 



insects entire as transparent objects, 305 



Method of preparing minute entomostraca, mites, spiders, and insects, 307 



Carbolic acid in balsam mounting, 307 



Killing and preserving insects 307 



Bleaching fluid for insects, 308 



To clear objects for balsam mounting, 308 



Mounting insects in balsam without pressure, 308 



Preparing and mounting dissections of the appendages, etc 309 



Mounting minute insects and acari in balsam 309 



Sections of the brain, 310 



Preparing the sympathetic nerwus system of the cockroach, . . .311 

 Making sections through and bleaching the eyes of insects, . . , .311 

 Expanding and mounting the tongue of the louse and blow-fly, . . 314 

 Microscopic sections of the pi'oboscis of flies, bugs, and bees, . . .315 



Sections of the ovipositor or sting, 315 



Mounting the gizzards of insects 316 



Preparation of the intestine of insects 316 



Preparation of insect spiracles 317 



Mounting of tracheae, 317 



Mounting legs, etc., of insects, 318 



Mounting the skin of caterpillars 318 



Dissection and preparation of the spermatic filaments, 318 



Making sections of eggs, 319 



Preparing embryos of insects, 321 



Surface study of eggs, and hardening for cutting, etc., 322 



Mounting dry the eggs of insects, 323 



Preparing flre-flies, etc., 323 



Mounting dry the appendages of insects for pinning in the cabinet, . 323 

 Mounting the " saw" of the Tenthredinidce, 324 



