Mr H. C. Watson has marked for me in the well-sifted London Catalogue of plants (4th edition) 63 plants which are therein ranked as species, but which he considers as so closely allied to other species as to be of doubtful value: these 63 reputed species range on an average over 6.9 of the provinces into which Mr Watson has divided Great Britain.

What is your latest foible? / Is gin rummy more exquisite? / Is skiing more enjoyable?

The triclads Dugesia, Polycelis and Planaria have been encountered (Durrenfeldt 1978) though Minckley (1963) mentions the avoidance of Dugesia in carbonate-depositing areas.

It was not until he had ascertained that all his mufflings were adjusted, and his coat-collar brought as near his hat as was consistent with leaving any of his face out […]