thank you for the helpful response.
In fact I eventually succeeded and managed to get a copy of all 3 magazines. The articles are excellent and have drawings that give all the detail that I need - except the armament. It can be seen but really more detail is needed.
The guns were 4 x 27cm 1875 model. 14cm, 65mm 47mm,= and 37mm
But Freench naval armament is a mystery to me !
Any help would be much appreciated.
Many thanks again