This is PART II of a two part proposal investigating the
 very low mass population of the Pleiades open cluster.
 Part I has been submitted separately.

 Hambly, Hawkins & Jameson (1991, MNRAS, 253, 1) carried out
 a deep proper motion survey of the Pleiades discovering a
 large population of low mass stars.  Follow-up infrared
 photometry (Steele, Jameson & Hambly, 1993, MNRAS, 263, 647)
 showed that around 20 of the Pleiades objects were
 brown dwarf candidates (ie. had M=0.07-0.08 M_solar).
 We propose to use ISOCAM to map a 1 square degree area
 of the cluster.  This will allow us to search for
 objects down to around 0.02 M-solar.  Any objects
 therefore found would be excellent brown dwarf candidates
 that would stimulate a large follow up program both
 with ISO and ground based facilities.  Extrapolating the
 mass function of Hambly, Hawkins & Jameson into the
 brown dwarf regime predicts that this survey should
 find around 60 brown dwarfs.  The chances of success for
 this proposal in finding brown dwarfs is therefore high.
 If no brown dwarfs were found this would also be a
 very important result since this would place strong
 constraints on theories of star formation by fragmentation.