poem lines are generally short implying a sense of simplicity and stability - level of acceptance on the speaker's part
"imperceptibly" - suggests that no one notices age speakers pain and grief because it has happened so gradually
oxymoron since most times grief is noticeable and the person feels melancholy
"grief' - pain is unbearable and overwhelming
'The summer lapsed away'
summer is personified by the use of the capital letter
echoes the first line, emphasising how grief and change of seasons can go unnoticed
link between summer and grief in the first two lines - comparison holds throughout the poem- surface message about summer represents the narrators thoughts on grief - time passing and death is approaching
'into the Beautiful'
religious reference to heaven - looks at dying from a positive side - she's not scared of dying (maybe because she has seen so many of her friends die and get buried right in front of her house - there used to be a park which was replaced by a graveyard, right in front of her house)
'Into the Beautiful '
summer escapes 'into the beautiful' hinting that the end of grief is ultimately positive-only fullstop in the poem indicating a sense of finality- reflects the finality of summer (and grief) having passed -last four lines - less punctuation, more decisive tone - speaker accepts the change that has taken place
context
Emily Dickinson lived in Massachusetts, USA, 1830-86. She was recluse so did not leave the house often
Before she wrote this poem several family members and friends had died
structure
Dickenson uses a series of dashes to create a hesitant and disjointed pace to the poem, reflecting her own fractured state of mind