262 Dr Andrejewskyi on the Vegetables 



temperature is at 152°, and the Zanichellia palustris in water at 

 95°. 



Besides these phanerogamous plants which flourish around 

 the spring, there are found in the mineral waters themselves a 

 vast number of plants belonging to the great family of the Algae. 

 Even Pliny has taken notice of this, and many other authors 

 have mentioned it since his day. Thus Claudien says, in 

 speaking of these springs, " Fumantia vernare pascua luocuriare 

 cociam silicem ; and Cassiodorus, in the letter of Theodoric to 

 Aloys the architect, thus expresses himself: " Rideat jlorenti 

 gramine Juries decora campestris qua, etiam ardentis aquae Jer- 

 tilitate Icetatur miroque modo dum proocime salem generat steri- 

 lem nutriat pariter et virores. Eight centuries after Cassiodorus, 

 the Marquis Jean Dondi found the stones covered over with 

 vegetation, and Fallopius witnessed these plants loaded with 

 flowers and fruit. Baccius and Vallisneri have alleged that the 

 Confervas were only found at the junction of the cold water with 

 the hot, along the margin of the stream; but this statement has 

 been refuted by Vandelli and Mandruzatto. 



Vandelli, in his Tractatus de Thermis agri Patavini t 1761, 

 describes the following Confervas : 



Conferva alba. — In the mineral waters of Saint-Pierre, where 

 the temperature is at 145° of Fahr., the white colour is owing 

 to the high temperature ; for, when found in water at 122°, the 

 plant has a greyish colour. 



Conferva anonyma,— -These appear as white filaments, which 

 gradually form a crust on tuffaceous matter. They occur in 

 water at 122°. 



C. Aponitana. — These are triquetrous leaves, furnished with 

 vesicles, like those of the marine algas. They occur in water at 

 118°. 



C. capillacea. — In water at 112°. 



M. Andrejewskyi has carefully observed the Ulva labyrinthi- 

 fbrmis, Lin., which grows abundantly in these waters. Lin- 

 naeus arranged this plant among the Algae ; Agardh, among the 

 Oscillares ; Bory de Saint Vincent, also among the Oscillares, 

 and in the genus Anabaina, which forms a part of the scale of 

 living beings, intermediate between the vegetable and animal 

 kingdom. 



