The analyses of a text #1

The narrator recalls his adolescence.
His wife died in the narrator's old friend Agnes's arms, when the narrator was at parlor with his wife's pet dog Jip.

Chapter 53 ANOTHER RETROSPECT

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More restless than he was, he crawls out of his house, and looks at me, and wanders to the door, and whines to go upstairs.
'Not tonight, Jip! Not tonight!'
He comes very slowly back to me, licks my hand, and lifts his dim eyes to my face.
'Oh, Jip! It may be, never again!'
He lies down at my feet, stretches himself out as if to sleep, and with a plaintive cry, is dead.
'Oh, Agnes! Look, look, here!'
- That face, so full of pity, and of grief, that rain of tears, that awful mute appeal to me, that solemn hand upraised towards Heaven!
'Agnes?'
It is over. Darkness comes before my eyes; and, for a time, all things are blotted out of my remembrance.
[David Copperfield by Charles Dickens]
1. I'd like to know "so full of pity, and of grief" modifies "the face."
2. I think "that face, that rain of tears, that awful mute" is the subject of "appeal."
If so, I'd like to know why there isn't "and" before "that awful mute"
3. I'd like to know the participle phrase "that solemn hand upraised towards Heaven" means "in the state that solemn hand was upraised towards Heaven."
Thank you in advance for your help.