Chapter C: E. F. We would strongly recommend our Correspondent to adopt the paper

process described by_ DR. DIAMOND _in our first Number for the present year (with correction of using the gallic acid, which, as stated in a subsequent Number, was by accident omitted). Recent experience has more than ever convinced us that if the method there laid down be_ strictly _followed, the photographer will not meet with failures._

AN AMATEUR (Helston). MR. LYTE _is at present abroad, or we are sure he would readily answer the Query of our Correspondent, as to whether the chloride of barium recommended by him at p. 252., and the nitrate of lead at p. 373., are to be the crystallised or liquid preparations._

AN AMATEUR PHOTOGRAPHER (Manchester). _If you will transmit us a specimen of the failures which you mention, especially of the waved appearance, we will do the best to answer your Queries: it is impossible otherwise satisfactorily to do so._