Try like this you may get the result
string str = "<html><head></head><body>Dear Check,<br /><div style=\"removed: relative; removed 0; removed 0;\"> <img style=\"position: relative; top: 0; left: 0;\" src=\"http://www.google.com/imgres?imgurl=&imgrefurl=http%3A%2F%2Fwww.designsnext.com%2Fnature-wallpapers%2F&h=0&w=0&tbnid=-LkDg6OfUsMLZM&zoom=1&tbnh=197&tbnw=255&docid=9A7LVoILs90PjM&tbm=isch&ei=ICE2VIfUH4e3uATz74KgDw&ved=0CAcQsCUoAQ\"></img><img style=\"position: absolute; left: 199px; top: 293px;\" src=\"http://www.google.com/imgres?imgurl=&imgrefurl=http%3A%2F%2Fwww.designsnext.com%2Fnature-wallpapers%2F&h=0&w=0&tbnid=-LkDg6OfUsMLZM&zoom=1&tbnh=197&tbnw=255&docid=9A7LVoILs90PjM&tbm=isch&ei=ICE2VIfUH4e3uATz74KgDw&ved=0CAcQsCUoAQ\"></img></div><br></body></html>";
Please give the full path of an image.