Here's the transcription, as best as I can make out:
CONVERY
JOHN M. CONVERY
IN MEMORY OF _________ (unreadable)
SARAH CONVERY WHO DEPARTED
THIS LIFE 12TH JANAURY 1873
AGED 46 __________ (unreadable)
AND HIS DAUGHTER ___________ (unreadable) CONVERY
WHO DEPARTED THIS LIFE
14TH JANUARY 18 __ 9 - third digit could be "8", "9", "0" or another digit; I believe last digit is a "9"
ALSO THE ABOVE NAMED __________ (unreadable)
WHO DIED 2ND JANUARY 1881 - I've confirmed the year through death records
AGED 72 YEARS.
Hope this is helpful.
Caren