11 



is added to each can and thus preserved in transit to the city 

 depot. This system is in actual operation at Rheinsberger. 

 The cans used are illustrated in Fig. 1. 



As will be seen the lower 

 rim is wide enough to al- 

 low the handles and neck 

 of the lower can to tele- 

 scope into the upper one 

 and thus they may be 

 stacked solidly. 



The advantages claimed 

 are that a great saving of 

 space is obtained and that 

 owing to being packed vir- 

 tually solid, there is little 

 chance of change in tem- 

 perature, if the outside is 

 protected with straw mats. 



All of which is true, but he does not discuss the extra 

 expense (per quart) of these cans, nor the increased difficulty 

 in keeping them clean, both of which objections are evident. 



PRESERVING IN VACUUM. 



In I/Industrie Latiere May 10, 1891, M. C. Nourry ex- 

 presses his belief in this system, and though I do not share 

 this belief, it may be of interest to put it on record here. 

 Figs. 2 and 3 represent the proposed can, A is the body of the 

 can preferably enamelled, c is the piston screw, which is 



Fig. 3. 



