appears much to exceed their width ; as, where contractions occur, which is 

 generally the only mark by which the diffepiments can be discovered, the fila- 

 ments gradually and nightly diminifh for a confiderable diftance towards them. 

 In drying, this plant changes to a greenifh grey color, and adheres both to glafs 

 and paper. 



A. C. comoides, natural fize, growing on a pebble. 



B. Ditto magnified 3. 



C. Ditto Ditto 1. 



