CHAPTER XIT. 



DECEMBER. 



MICROSCOPIC HUNTING IN WINTER— WATEK-BP:ARS, OR TARDI- 

 GRADA-THEIR COMICAL BEHAVIOUR— MODE OF YIEVV1N(; 

 TH EM-SINGULAR GIZZARD— VVENHAM'S COMPRESSOR! UM- 

 ACHROMATIC CONDENSER- MOUTH OF THE WATER-BEAR- 

 WATER-BEARS' EXPOSURE TO HEAT— SOLUBLE ALBUMEN- 

 PHYSIOLOGICAL AND CHEMICAL REASONS WHY THEY ARE 

 NOT KILLED BY HEATING AND DRYING— THE TRACHELIUS 

 OVUM— MODE OF SWIMMING— METHOD OF VIEWING— BY DARK- 

 GROUND ILLUMINATION— CURIOUS DIGESTIVE TUBE WITH 

 BRANCHES— MULTIPLICATION BY DIVISION— CHANGE OF FORM 

 IMMEDIATELY FOLLOWING THIS PROCESS - SUBSEQUENT 

 APPEARANCES. 



