They clasped his neck, they kissed his cheeks,
They held him by the hand!-
A tear burst from the sleeper's lids,
and fell into the sand.
[Stanza 4]
And then at furious speed he rode
Along the Niger's bank;
His bridle-reins were golden chains,
And, with a martial clank,
At each leap he could feel his scabbard of steel
Smiting his stallion's flank.
[Stanza 5]
Before him, like a blood-red flag,
The bright flamingoes flew;
From morn till night he followed their flight,
O'er plains where the tamarind grew,
Till he saw the roofs of Caffre huts,

 Simile 
 
 “Flamingoes flew” - Aliiteration 
 As these pink birds take off it looks like a red flag 
 

The Slaves Dream