 On the terrestrial globe , tracks of the voyages of Francis Drake and Thomas Cavendish around the world are marked by red and blue lines respectively . These lines were applied when the globe was first made . They are mentioned in a description of Molyneux 's globes in Blundeville His Exercises ( 1594 ) by Thomas Blundeville , a country gentleman who was an enthusiastic student of astronomy and navigation . Thomas Cavendish appears to have helped Molyneux with his globes , and it is possible that Molyneux accompanied him on his 1587 voyage around the world , which returned to England on 9 September 1588 . In 1889 , Sir Clements Markham , an English explorer , author and geographer , pointed out that a Latin legend on the terrestrial globe , placed off the Patagonian coast , states : " Thomas <unk> 18 Dec. 1587 <unk> terra sub nostris <unk> primum <unk> sub <unk> 47 cujus seu <unk> <unk> <unk> <unk> ex parte <unk> sunt <unk> et <unk> <unk> " . However , Helen Wallis , former Map Curator of the British Library , observed in 1951 that this was unlikely , because Molyneux incorrectly plotted Cavendish 's course in Maritime Southeast Asia . She suggested , however , that another legend on the globe may indicate that he sailed on at least one if not all of John Davis 's voyages . 
