'No One Suspected the Hantu Batu: Sumatran Poltergeists Throwing Stones'

A case of mysterious stone-throwing which was reported in the SPR's Journal in 1906 by Mr Grottendieck, an Associate of the Society, is the subject of a blog post.  The post can be found here:

https://esoterx.com/2016/11/04/no-one-suspected-the-hantu-batu-sumatran-poltergeists-throwing-stones/

The original article, with the responses and further discussion, can be found in the SPR's online library.  Access is free to members:

http://www.lexscien.org/lexscien/index.jsp