OFFICE OF EXPERIMENT STATIONS. 713 



sarj, «ind to undertake studies with the respiration calorimeter in 

 cooperation with the Bureau of Animal Industry of the nutritive 

 value of table and culinary fats, supplementing this work by special 

 studies of the use of different fats in preparing foods for the table, 

 and of the general use in the diet of this important group of food- 

 stuffs. Plans have also been made for extended studies of the 

 gaseous exchange and energy transformations of fruits and vegeta- 

 bles during the ripening period, this work to be carried on in coopera- 

 tion with other bureaus of the department. Such work will be 

 greatly facilitated by the use of a small respiration calorimeter spe- 

 ciall}^ devised to meet the requirements of this kind of investigation, 

 which is now being constructed. In this apparatus the use of auto- 

 matic recording and controlling devices has been extended to opera- 

 tions in which it had not hitherto been attempted. This is of par- 

 ticular importance in experiments that will continue for considerable 

 periods. 



For the year 1913 plans have been formulated which involve addi- 

 tional cooperative studies with the respiration calorimeter of prob- 

 lems concerned with fruits and vegetables during ripening and 

 storage, and other phj^siological studies of plant growth, as well as 

 studies of the changes which take place in animal-food products — 

 for instance, butter, eggs, and cured meats during different conditions 

 of storage. It is also proposed to supplement the technical work by 

 studies of problems of household interest and to continue the prepara- 

 tion of popular bulletins and other publications to meet the demands 

 which are made for them. 



