unmoved by abuse of McClellan's enemies, 342;
relieves McClellan of general command, 343;
forced by Congress to divide Army of Potomac into corps, 344;
appreciates importance of Western operations, 347;
urges on Western generals, 347;
unable to supply troops, 348;
appoints Fremont to command Department of West, 349;
tries to guide Fremont, 349;
appealed to by Mrs. Fremont, 350;
removes Fremont, his reasons, 350, 351;