efcape, as I believe they do univerfally in thofe plants, which constitute the genus 

 ceramium of Roth through an aperture, which, when the feeds are matured, is 

 formed at their apices. They are found only in the fpring. 



C. dichotoma grows about the bottom of ditches ; as it approaches decay, it 

 rifes to the top of the water, and there expofed to the fun and air lofes not only its 

 natural form, but alfo its color, turning to a pale yellowifh green, and, becoming 

 inflated with air, bubbles like many other frefh water fpecies. Few plants of this 

 tribe have been either longer or better known. When dried, it becomes rigid, 

 and adheres but very flightly to either glafs or paper. 



A. C. dichotoma, natural fize. 



B. Ditto magnified 2. 



