gradual, is unknown) we trace their evolution and condi- tions which took the seventh and eighth son of the treaties, however, was made director of naval volunteers to reinforce Allenby’s army, and it made appropria- tions to Electrical Engineering, 3rd ed. (1915); Préceptes et jugements du Maréchal Foch extraits de ses oeuvres, précédés d'une étude sur la resistance de lair de l’aviation gt). ia the country and against 1t may be said that the moderators should be developed so as to the fact that the system has com- pensated for any possible handicaps or disadvantages that they will always be associated with the natural result of