What often makes its presence known?

All spiritual forms arise up and away from the material, but before rising, they often make themselves both seen and felt. 

A dying rose, as it arises from the material, is materially sensed by its perfume, which is really the spiritual substance of the rose arising on its way to fairer climes. 

The spirit of an individual often makes its presence known in a very material and sensible way. 

Sometimes it is seen―sometimes felt―sometimes by the sense of hearing―sometimes a combination of all three―seeing, hearing and sensing―before it arises to fairer climes, and after it has once arisen, it may and can return and manifest its presence in various ways as conditions permit, for instance, using the material brain of a medium as a camera and from thence impressing the sensitive spirit of the medium, which may be compared to the sensitive plate of the photographer.