 The paintings depict isolated figures enclosed in spaces that are undefined , overwhelmingly claustrophobic , reductive and eerie . Coming early in Bacon 's career , they are uneven in quality , but show a clear progression especially in how they utilise and present ideas he was still clearly developing and coming to terms with . Head I ( actually begun in the winter of 1948 ) and Head II show formless pieces of flesh that broadly resemble human heads ; they have half @-@ open eyes and a pharynx , though it is positioned much higher than would be expected in a human . Heads III , IV and V show fully formed busts recognisable as men , and are characterised by a haunted atmosphere . These two broad ideas coalesce in Head VI , which is as physiologically tortured as the first two paintings , and as spectral as the middle three . In Head VI the figure has developed and is now shown wearing vestments , the first indication in Bacon 's work of the influence of Velázquez , while the focus has become the open mouth and the study of the human scream . 
 The paintings depict isolated figures enclosed in spaces <a href='null_relcl' title='1'><mark>that</mark></a><a href='drop_aux' title='2'><mark>are</mark></a>undefined , overwhelmingly claustrophobic , reductive and eerie . Coming early in Bacon <a href='null_genetive' title='3'><mark>'s</mark></a>career , they <a href='drop_aux' title='4'><mark>are</mark></a>uneven in quality , but show a clear progression especially in how they utilise and present ideas he was still clearly developing and coming to terms with . Head I ( actually begun in the winter of 1948 ) and Head II show formless pieces of flesh <a href='null_relcl' title='5'><mark>that</mark></a>broadly resemble human heads ; they <a href='got' title='6'><mark>have</mark></a> half @-@ open eyes and a pharynx , though it is positioned much higher than would be expected in a human . Heads III , IV and V show fully formed busts recognisable as men , and are characterised by a haunted atmosphere . These two broad ideas coalesce in Head VI , which is as physiologically tortured as the first two paintings , and as spectral as the middle three . In Head VI the figure <a href='been_done' title='7'><mark>has</mark></a> developed and is now shown wearing vestments , the first indication in Bacon <a href='null_genetive' title='8'><mark>'s</mark></a>work of the influence of Velázquez , while the focus <a href='been_done' title='9'><mark>has</mark></a> become the open mouth and the study of the human scream . 
The paintings depict isolated figures enclosed in spaces undefined , overwhelmingly claustrophobic , reductive and eerie . Coming early in Bacon  career , they uneven in quality , but show a clear progression especially in how they utilise and present ideas he was still clearly developing and coming to terms wit . Head I ( actually begun in the winter of 1948 ) and Head II show formless pieces of flesh broadly resemble human heads ; they got half @-@ open eyes and a pharynx , tho it is positioned much higher than would b expected in a human . Heads III , IV and V show fully formed busts recognisable as men , and r characterised by a haunted atmosphere . dem two broad ideas coalesce in Head VI , which is as physiologically tortured as da first 2 paintings , and as spectral as tdamiddle three . In Head VI the figure done developed and is now shown wearing vestments , thdairst indication in Bacon  work of the influence of Velázquez , while thedacus done become the open mouth and the study of the daan scream .