The figurative language used is Personification. This is Personification because darkness was given human qualities. The word 'darkness' symbolizes depression or emotional instability. 'Slumber summons me to play' means that sleep is the only option to escape from reality and forgetting about responsibilities. The reader feels the emotion from this because it makes the reader imagine what it's like.
When they get married they will aquire the last name of their partner
Indirect object-me
Direct object-an invitation
Preposition-to
<span>Dr. Lanyon receives a letter from Dr. Jekyll asking him for a favor. The favor <span>involved breaking and entering into Dr. Jekyll’s laboratory and giving some potions to a messenger who will arrive at Dr. Lanyon’s house at midnight.</span></span>