Final answer:
The tone of the passage is adventurous and optimistic, with words like 'wander', 'long', and 'wild' contributing to this tone. If the words 'travel' and 'lonely as the solitary cloud, collecting and numbering plants' replaced the bolded words, the tone would change to one of solitude and introspection.
Step-by-step explanation:
The tone of the passage is adventurous and optimistic. The author describes sleeping without blankets or supper but emphasizes that finding a loaf of bread was usually not difficult. The words 'wander', 'long', 'wild', 'fertile', and 'free' contribute to the adventurous and optimistic tone.
If the words 'travel' and 'lonely as the solitary cloud, collecting and numbering plants' replaced the bolded words, the tone of the passage would change to one of solitude and introspection. The words 'travel' and 'lonely' evoke a sense of being alone, while 'collecting' and 'numbering plants' imply a methodical and solitary activity. These words would create a tone of solitude and introspection.