126 



Fig. 76. Oscillatoria labyrinthiformis. Br. : 0,00081 ; 

 c. tube ; b. green content with a square cavity 

 a; d. division of the content in the tube. 



77. Oscillatoria Okenii. a. the head; b. the tube; 

 c. the content; d. the cavity found within it; 

 thickness of the filament: 0,000325. 



78. Oscillatoria interrupta. a. the head; b. the 

 sheath; c. the content of a gall - colour 5 

 thickness: from 0,000045 to 0,00006. 



w 79. Oscillatoria laminosa. a. the head; b. the 

 sheath; c. the content; d. empty interval; 

 thickness of the filament: 0,000265. 



80. Oscillatoria vivida. Thickness: from 0,00010 

 to 0,0008. a. content with small oily drops; 

 tube. 



81. Oscillatoria punctata. The green content, 

 with black spots; lives amongst the prece- 

 dent ones; thickness: 0,000015. 



82. Melotomus Fragilaria. a. member of the cui- 

 rass ; b. brown content; breadth of a member: 

 0,00033. 



83. Ophiothrix sphaerocephalus. a. surrounding 

 the Oscillatoria interrupta ; b. the head; c. 

 the neck; thickness of the filament: 0,0017. 



84. The same, more magnified; d. tube; d. green 

 content. 



85. Sphaerodesmus bicolor. Thickness of mem- 

 bers: 0,000251; a. green globular members; 

 b. orange -coloured internodes. 



86. 87. Sphaerodesmus depressus. Breadth of a 

 member: 0,00018. a. transparent intermedial 

 bladder ; c. double members ; b. transparent 

 internodes. 



88. 88. Sphaerodesmus spirillum. Thickness : 

 0,000281. Fig. 89. natural thickness; fig. 88. 

 rolled filament. 



90. Middle cell a. and filamentous members b. of 

 the same animalcule. 



