at the Royal Institution, 1 900-1 907. 



367 



industry of considerable magnitude ; it is well known, in fact, that 

 under the name of " Thermos flasks " they are now in popular use 

 both for storing hot beverages and for keeping liquids cold in 

 summer time. In view of the importance of food being always 



Fig. 8. 



administered to infants at an even temperature, the use of such 

 flasks may be expected to become very general. This is one illustra- 

 tration of the way in which the research work of the Royal Institution 

 has conduced to the reaUsation of the objects of its founder, Count 

 Rumford. 



