^  I.e.  intricate  and  difficult  to  work.
SCIENCE,  etc.  293

it  may  be  made  very  useful  to  Ships,  but  I  dare  not  meddle  with
that  matter ;  and  leave  it  to  the  Judgement  of  those  who  are  the
best  Judges  of  Maritain  Affairs.'

His  engine  was  as  ingenious  as  it  was  simple.  Two  boilers
with  furnaces  supplied  the  steam.  This  was  admitted  alternately,
by  means  of  a  handle  worked  by  a  man  or  boy,  into  one  of  two
elliptical  receivers,  where  it  condensed,  formed  a  vacuum,  and  the
water  rushed  in  and  filled  its  place — the  same  principle  which  is
the  foundation  of  that  invaluable  feed-pump,  Giffard's  injector.
When  full,  the  application  of  steam  ejected  it  from  the  receiver,  and
forced  it  up  the  pipe,  and  so  de  novo.  His  idea  was  to  utilise  the
water  thus  raised  to  turn  a  water-wheel,  and  thus  get  effective
power  for  working  machinery  in  mills.
CHAPTER  XXIX.
LITERATURE,  THE  PRESS,   ETC

Authors Public    libraries — Their    condition — George     Psalmanazar—Hack

,vriters — Poverty  of  authors — Their  punishment— The  press — Daily  Cour-

ant List    of   newspapers — London    Gazette — Postboy— Postman— "Dawli's

News  Letter— Dyefs — Evening  papers — Dearth  of  domestic  news — Ameni-
ties of  the  press— Roper  and  Redpath— Tutchin— His  trial— Press  remune-
ration—Mrs.   Manley— The    Essay    papers— The    halfpenny    stamp— Its

effect Advertising — ^Almanacs — List  of  them — Moore's — The  Ladies'  Diary

Poor  Robins  Almanack — Merlinus  Liberatus — The  Essayists  and  Part-
ridge—His false  death— His  elegy  and  epitaph— An  amateur  magazine.
