[Illustration: Fig. 1.--Lartigue's Switch Controller Fig.
2--Transverse Section Fig. 3--Longitudinal Section Fig. 4.--Position
of the Commutators during the Manuever Fig. 5.--Pedal for Sending
Warning to Railway Crossing--Elevation. Fig. 7.--End View.
Fig. 8.--Electric Alarm. Fig. 12.--Guggemos's Correspondence
Apparatus--External View. Fig. 13.--Interior of the Same. Fig.
14.--Annunciator Apparatus. Fig. 15.--Controller for Water Tanks
(Lartigue System).