Question:
Which position did Sir James Bourne, 1st Baronet hold in Jun, 1878?

Context:
 Sir James Bourne, 1st Baronet holds the position of Member of the 19th Parliament of the United Kingdom from Jul, 1865 to Nov, 1868. 
 Sir James Bourne, 1st Baronet holds the position of Member of the 21st Parliament of the United Kingdom from Jan, 1874 to Mar, 1880. 
 Sir James Bourne, 1st Baronet holds the position of Member of the 20th Parliament of the United Kingdom from Nov, 1868 to Jan, 1874.

Answer:
Member of the 21st Parliament of the United Kingdom