228 



PHARMACEUTICAL BOTANY 



near springs, where it forms slimy masses. Under the microscope 

 a mount of Glceocapsa will be seen to consist of isolated protoplasts 

 and groups of protoplasts, surrounded by concentric gelatinous 



3-d 



FIG. 109. A, B, C, D, E, Gloeocapsa; F, Oscillatoria showing a dead cell (d) 

 which marks a place of separation into segments. (A), Gloeocapsa, parent cell 

 composed of central protoplast containing scattered chromatin granules, sur- 

 rounded by cell wall and 3 mucliaginous envelopes; (B), parent cell is shown 

 elongated, the protoplast in process oi division to form two daughter protoplasts; 

 (C) , daughter protoplasts, each surrounded by two gelatinous envelopes and both 

 within the original parent envelopes; (D) the daughter protoplasts shown in C 

 have just divided to form granddaughter protoplasts which have later separated, 

 each forming envelopes of its own but all four encircled by the parent envelope. 



envelopes. Each protoplast consists of a protoplasmic mass 

 which contains blue and green pigments. No definitely organized 

 nucleus is apparent but chromatin in the form of granules is scat- 



