PREFACE. 
xi 
toiling too often in a barren field,—I must add tlie 
word of caution, “Wait!” There can be no hope 
-of success until the slave trade shall have ceased to 
-exist. 
The journey is long, the countries savage; there 
•tire no ancient histories to charm the present with 
memories of the past; all is wild and brutal, hard 
■and unfeeling, devoid of that holy instinct instilled by 
nature into the heart of man—the belief in a Supreme 
Being. In that remote wilderness in Central Equa¬ 
torial Africa are the Sources of the Nile. 
