■"^  See  also  supra,  §§  42-55,  especially,  §§  43-49,  54.  As  to  forfeiture
for  breach  of  this  covenant,  see  infra,  §§  126,  127.
See  generally  as  to  these  covenants,  7  Am.  Law  Rev.  240  (1872),  where
the  Mass.  cases  are  oonmiented  upon.
■*^  Austin  V,  Harris,  10  Gray,  296;  Marion  St.  Garage  Co.  v,  Sugden,
229  Mass.  130, 133.   Cp.  7  Am.  Law  Rev.  240,  250.
This  clause  was  held  in  Peaks  v.  Cobb,  197  Mass.  554,  to  refer  to  a  pos-
session which  would  enable  one  to  maintain  trespass  against  an  intruder;
"not  to  add  another  kind  of  prohibited  occupation  to  that  previously
foibidden,  but  to  prevent  the  tenant  from  suffering  or  permitting  a  sub-
tenancy, as  well  as  from  actively  creating  it.  It  does  not,  therefore,  forbid
letting  rooms  to  lodgers.  Peaks  v,  Cobb,  197  Mass.  554;  Stanton  9.  Allen,
32  S.  Car.  587.    Cf.  White  v.  Maynard,  111  Mass.  250.
^  Supra,  §42.
M>  Winnisimmet  Trust  v.  Libby,  232  Mass.  491.
^Supra,  §42.
