Which heresy did Spurgeon accuse Pusey of? I have been asked to explain what Charles Spurgeon meant when he said "Puseyism" was heretical.  Apparently, Charles Spurgeon brought this up in his sermons.  

I have done some initial research and found out that Edward Pusey was Regius Professor of Hebrew at the University of Oxford. He was one of the main promoters of the Oxford Movement.

What I can't find is any reliable source/link to any sermon given by Charles Spurgeon where he describes "Puseyism" as heretical. I don't have much time in which to respond and so I would be grateful for any insights/links/articles that shed light on what Charles Spurgeon thought about "Puseyism".
The following quotes show that Spurgeon accused Pusey (and his followers) of 

1. Attempting to Re-unite Anglicanism with Catholicism


  Nowadays Dr. Pusey dreams that the Anglican and the Russian Church may be united, and then perhaps the Romish may chime in—and so once more all may be one. A mere dream! A mere chimera of a kindly but whimsical brain! If it should ever come to be a reality it would prove to be an upas tree at the roots of which every honest man must at once lay his axe. But what did the Savior mean, "That they all may be one, as You, Father, are in Me"?


Spurgeon's Sermons Volume 12

2. Idolatry


  We
  spoke of idolatry as being buried at Athens and consigned to its tomb at Rome, but it lives in the Puseyism of the present hour; men are naturally idolaters, and it is nothing but idolatry which nowadays, in the
  toyshops of the Tractarians is polluting the simplicity of our worship by thrusting their childish symbols
  and emblems before the sublime truth that God is to be worshipped in spirit, and only to be approached
  through the atoning sacrifice of His only-begotten Son. 


The Heart - A Den of Evil