EBB AT A. Pack x, paragraph headed "Cambridge Sanatorium," line 8, for "Miss Duffins " read "Miss Dutlin the position of Matron in March, 1900 " ; and in line 5, for " Miss Brigeman " read " Miss Bridgman." On page 7G, in second paragraph, line 1, for " 114" read " Hβ," and for " 155" read "91 " line 2, after " were discharged " read " and 10 died " ; line 5, for " 107 " read " 43."