Macabre, RCs praying before parts of a brain!  This RC fetish for praying before body parts  can only be inexplicable to outsiders. If this is evangelization, who would it attract?
(There was a devotion to the foreskin of Jesus!)
In the past, thieves made big money in stealing body parts.  Fortunately, that market is dwindling.
More we know of the brain of John Bosco, more unsettling.  He was a militant ultramontanism. 
Story to be told yet is the incredible number of Salesians who have been involved in the clerical abuse of children.  Unfortunately, having institutions of poor, marginalized little ones seems to be a magnet for pedophiles.