308 MAINE AGRTCXXTURAI, KXPERIMEXT STATIOX. I9I3. 



be 110' mistake, and the time and energy required in reading the 

 record are reduced to a minimum, x^fter a considerable num- 

 ber of experiments and many inquiries I obtained an ear tag 

 made by T. CadwaUader at Salem, Ohio, for use vvdth rabbits. 

 Subsequent experiments have shown that this tag can be used 

 very satisfactorily with guinea-pigs. A slightly different form 

 might very well be adopted to use on even smaller mammals. 



Fig. 1-14. Ear tags described in text. 



The character of this tag is seen from figure 144. A small 

 chick punch, such as can be obtained from any poultry supply 

 house, is used to pierce the ear. The tag is then inserted and 

 die points spread. 



Fig. 145. Showing car tags in place. 



Figure 145 shows the ear tag in place on a young and an 

 adult guinea pig. The tag does not inconvenience the animal 



