For, my young friends," suddenly addressing the 'prentices and Guster, to their consternation, "if I am told by the doctor that calomel or castor-oil is good for me, I may naturally ask what is calomel, and what is castor-oil. I may wish to be informed of that before I dose myself with either or with both. Now, my young friends, what is this Terewth then? 
Now, my young friends," suddenly addressing the 'prentices and Guster, to their consternation, "what is this Terewth then? 