The eighth volume, \u201cThe Master Tape,\u201d<\/strong> is a 40-minute slide show<\/strong> covering all 240 plants presented in Volumes 1 through 7.<\/p>\n Each plant is displayed for 10 seconds<\/strong>, giving viewers the opportunity to challenge their knowledge and test their identification skills. Then, if you think you are really good, all 240 slides are presented in less than 10 minutes<\/strong> for an even greater challenge.<\/p>\n A reference sheet is included listing the Latin and common names of all 240 plants in numerical order<\/strong>.<\/p>\n