480 Scientific TnteJlifjence. 



air. I had a series of tin chambers constructed, which were not 

 permitted to enter the Royal Institution at all, but were taken 

 m the tinman to Kew Gardens. They were mounted 

 in the excellent laboratory recently erected there by the munifi- 

 cence of Mr. Jodreli. In this new position the insuperable diffi- 

 cult, s encountered in London disappeared, and tli experiments 

 followed the course of those described in my last investigation. 

 Two of the chambers gave way; but on being scrutinized thcy 

 were found leaky. Five sound chambers, on the contrary, re- 



stances which had given me so much trouble in London. Infu- 

 sions exposed to the common air at Kew became rapidly rotten. 



A fuller account of these researches shall soon be submitted to 

 the Royal Society. In prosecuting them thus far 1 have been 

 verv ablv assisled bv Mr. C'ottrell and his junior colleague Mr. 

 Frank Valter.— Proc. Roy. Soc, vol. xxv, No. 177. 



9. On Heat as a <i< ,;,</' ■>•!> ,rj,, „ ,//,-,• ■<>,,':.., u<, us!,/ ■i rr / l '.J; 

 by John Tyndall, F.R.S. Received Feb. 14, 1877. (Letter 

 addressed to T. Ii. Iluxlev, Ksq., S^-. R. Soc., and dated Feb. 14, 

 1877.)— In my "Preliminary Note;' communicated to the Royal 

 Society on the l*th of January, various infusions were referred to 

 as manifesting an astonishing resistance to sterilization by heat. 



informed that 

 favorable opi 

 indicated. 



It will, I think, now interest you to learn that the most obsti- 

 t. t of the infusions referred to in the " Note " have been since 

 rendered tractable by the application of very simple means. Fol- 

 i >f the germ theory, I have been 

 able, even in the midst ot a ■ v. aosphere, to 



sieniixc all the infusions by a temperature lower than that of 



It is known that the prolonged application of a low tempera- 

 ture is often equivalent to the brief application of a higher one : 



:■ ■ . 



ments here referred ... I 5 ,v - . ,sity. This, 



however, is not the case. The result depends solely upon the 



The seer 



ferred to t! 



: a.~ 



