The publisher sent unrevised bound proofs from which this review was prepared; unfortunately, there was no proof of an index, but the publisher has assured me that there will be one in the published book, a rather essential ingredient of a work with this title.
( ( ( ( ( The publisher ) ( sent ( ( ( unrevised bound ) proofs ) ( ( from which ) ( ( this review ) ( was prepared ) ) ) ) ) ) ; ) ( ( ( ( unfortunately ( , ( there ( was ( ( no proof ) ( of ( an index ) ) ) ) ) ) ) , ) but ) ( ( the publisher ) ( has ( ( assured me ) ( that ( there ( will ( be ( one ( in ( ( ( the ( published book ) ) , ) ( ( a ( ( rather essential ) ingredient ) ) ( of ( ( a work ) ( with ( this title ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
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Having an index in a book is very important. 
( ( Having ( ( an index ) ( in ( a book ) ) ) ) ( ( is ( very important ) ) . ) )
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