1888.] On the Plasticity of Glacier and other fee. 



353 



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We now come to the experiments made with the rough apparatus. 

 At first it fully deserved the name, but later on, viz., in Experiments 

 6, 8, 9, and 10, the results were quite as trustworthy as in the more 

 elaborate arrangement. 



Experiment No. 3. Rough Apparatus. — The specimen was a circular 

 cylinder frozen in Main's mould, about 20 cm. between the needles. 



