266 HEAT AND PROTOPLASM [Ch. VIII 



16. The temperatures were not taken on the spot. Mosbley says : " The 

 water from which the Algse were gathered was in the pools from which the 

 Chroococcus was collected as far as I can now [i.e. many months after (?)] judge 

 after testing water of successive temperatures with my finger, about 149°- 

 158" F. The water of the sulphur-springs, in the area splashed by which the 

 Oscillatoria are found, is quite scalding to the hand, and probably between 176° 

 to 191° F." 



17. The reference reads : "Dans celle [source chaude] de Saint Pierre, dont 

 la temperature varie de 33 k 35 degr6s, les Physa acuta, Drap. sont en nombre 

 si considerable qu'elles forment un veritable fond mouvant dans les canaux." 

 These hot water molluscs, as experiment showed, were killed at about 43°, 

 while Physa from ordinary sources die at once at 35°. They perished after a 

 few hours at 6° or 6°- 



18. Merely the note: "On en [living mollusca] trouve aussi dans des eaux 

 thermales : par exemple le turbo thermalis, espfece de paludine sans doute, vit 

 dans celles d'Abano, dont la temperature est de 40° R." 



19. The statement is not critical: "Their heat [hot springs] is too great 

 for the hand to bear; the highest temperature is about 150°." "In the hot 

 water of these springs a green plant vegetated, which seemed to be a species of 

 conferva growing in such situations : probably the fontenalis. But what is more 

 remarkable, a bivalve testaceous animal adhered to the plant, and lived in such 

 a high temperature too." 



20. See note 5. 



21. " J'ai mesure plusieurs fois & en diverses saisons, la chaleur de ces eaux, 

 & je I'ai toujours trouvfe ^ trfes-peu prfes la m§me ; savoir, de 35 degrfe dans 

 celle du soufre, & de 36 J ou 36.7 [R. from context] dans oelle de St. Paul. 

 Malgrg la chaleur de ces eaux, on trouve des animaux vivans dans les bassins 

 qui les rejoivent; j'y ai reconnu des rotif^res, des anguilles & d'autre animaux 

 des infusions. J'y ai m6me d^couvert en 1790, deux nouvelles especes de 

 tremelles doufes d'un mouvement spontan6." 



22. See note No. 14. 



23. Many individuals collected by R. Blanchaed "dans les eaux de thermes 

 du Hamman-Meskhoutine, prfes Guelma, dans les premiers jours d'avril; I'eau 

 des thermes, au point de la r^colte, a une temperature de 45° et de .50.5° C. 

 Les Cypris formaient une sorte de zone continue, de couleur chooolat, sur le 

 bord de I'eau." 



24. Found "in a hot spring, temperature 157° F., attached to the rock by 

 the long end at about an angle of 45° and continually moving. . . . The rocks 

 were covered with them." 



25. The note in "Insect Life" is abstracted from a longer article by Brunek 

 in the newspaper called the Lincoln (Nebraska) "Evening Call," for April 6, 

 1895. The article, through the kindness of Professor H. B. Ward of the Uni- 

 versity of Nebraska, I have now before me. The larvse were sent to Professor 

 Brunee by John C. Hamm, of Evanston, Wyoming, upon whom this state ment 

 of the conditions of life of the organisms depends. The larvse were found in a 

 cup-shaped depression in the top of a small isolated cone about 20 inches high, 

 situated about a few feet from a large sulphur mound or "dune," under which 

 one could hear the rumbling of boiling water. Through apertures in the bottom 

 the almost boiling water came up into the cup and ran over the edge of the pot. 



