368 



Prof. TyndalPs Remarks on the 

 Table II. 



Volume absorbed Volume absorbed 

 reduced to 0° C. reduced to 0° C. 

 and 760 millims. an d 760 millims, 



Experi 

 ment. 



Mean. 



Experi 

 ment. 



Mean. 



Cyanogen. 



Volume absorbed 

 reduced to 0° C. 

 and 760 millims 



Ex P<f- Mean. 

 ment. 



Logwood 



Ebony. 



Camwood 



Green Ebony 



Fustic (Cuba) , 



Lignum Vitae 



Boxwood " 



Jamaica Logwood 

 Sapan Wood 



Beech 



Rosewood 



Wistaria sinensis ... 



Vegetable Ivory 



112-4 

 111-3 

 1101 



106-6 

 104-4 



108-7 



930 



89-5 



96-0 

 84-6 



89-7 

 89-1 



88-2 

 89-2 

 83-0 



86-6 

 84-5 



65-0 



73-8 



69-9 

 69-8 



54-6 

 61-3 



50-6 



4403 



111-3 



106-7 



91-2 



90-3 



89-6 



89-0 



85-6 

 69-5 

 69-9 



58-0 



50-6 

 44-03 



53-1 

 56-2 



46-6 

 50-3 

 44-0 



44-7 

 51-3 

 44-7 



37-4 



44-8 

 41-3 



61-7 

 54-9 



47-2 



31-2 

 31-2 

 30-2 



33-3 

 32-2 



54-6 



47-0 



45-4 



40-8 

 580 

 472 



31-2 



33-3 



475 



53-6 ! 50-5 



50-3 



87-3 



89-6 



28-8 



57-3 



March 20, 1863. 



LII. Remarks on the Dynamical Theory of Heat. 

 By John Tyndall, F.R.S. 



To William Thomson, Esq., F.R.S. , Professor of Natural 

 Philosophy in the University of Glasgow >, 

 Sir, 



THE article in l Good Words ' which drew from me the brief 

 remonstrance published in the March Number of the 

 Philosophical Magazine bore your name, which preceded, though 



