The photograph depicts a sketch of the Stiger Vortex Rainmaking Canons promoted by Clement Wragge after investigations in Europe and America into the techniques of “cloud shooting” from these rainmaking cannons.

"Stiger Vortex": Correspondence, sketches and report re same for hail prevention and rainmaking experiments in Europe. Numerous pamphlets on the various types of guns available and modes of use. (Pamphlets are in French, German and Italian). 1901-1914.

Image from L’Illustration 22 Decembre 1900, No.3017, p.401.

Titled: Une exposition de canons contre la grêle sur la place Victor-Emmanuel à Padoue – d’après une photographie de M. Biétron.

PRV 5796/1/1 [AGS/N344]
Agriculture and Stock Department
Photographic Negatives: B1292
Report of Mr C L Wragge re “Stiger Vortex”
c1901