ERRATA. 



p. VIII, last line, for "Standford" read Stanford. 



p. XV, line 37, add Roots of Dicots. 



p. 45, line 2 from bottom, for "pillar" read arm. 



p. 46, line 5, for "F" read N. 



p. 54. line 13, for "Magnenta" read Magenta. 



p. 54, line 20, for "c. m." read m. m. 



p. 64, line 22, for "magnification" read size. 



p. 65. line 3, for "1-1000" read 1000. 



p. 69, line 16, for ' demonstrated" read demonstrated. 



p. 70, line 20. after "p. 362" add 365-68. 



p. 74, line 3, before "p. 118" insert p. 100. 



p. 75, line 11 and 12, for "4, 5," read (a), (b). 



p. 79. line 2, for "later" read latter. 



p. 80, line 7, add p. 47-68. 



p. 80, line 29. for "p. 11" read p. 61. 



p. 90, line 2 from bottom, after "Fig" add p. 



p. 91, line 12, add Fig. 27. 



p. 95, line 24, for "vacular" read vascular. 



p. 96, line 2 from bottom, for "reserviors" read reservoirs. 



p. 97, line 21, for "p. 40" read p. 141. 



p. 102, lines 15 and 25, for "vacular" read vascular. 



p. 103, line 4, for "management" read arrangement. 



p. 104, line 8, for "monocot" read Monocots. 



p. 104, line 10, for "Cucurbit" read Cucurbita. 



p. 108, line 1, for "System" read Systems. 



