imo, the Casorti exercise book ranks up there with other indispensable books such as Sevcik op. 1 and op. 8 because it contains the two first exercises a violinist should do:

The Rapid Detached Stroke (to overcome the difficulty of maintaining the bow at a 90 degree angle with the string.

Sustained Bow (to overcome tremor in the middle of the bow)

 I hope Pierre uploads this file.

http://imslp.org/wiki/The_Tech.....lessandro)