Sequel to "A martian Odyssey" by Stanly G. Weinbaum

This is a self-written sequel to the story "A martian odyssey" by Stanley G. Weinbaum. This was for a school assignement. I hope you enjoy! Link to get the story 

"Oh my god," cried Harrison. "This is great! We have to get this back to earth!"

"Not so fast," said Jarvis. "We have to find out more about this planet. Find new life-forms, look for Tweel and his civilization, find out more about the barrel-people, and lots of other things.

Harrison screamed: "But this might be a cure for cancer! Do you realize what this would mean? We can cure thousands of people!  We have to get this back to earth immediately! It's much more important than all of these other things!"

"No it is not!," said Jarvis. "You don't even know what the crystal means for those creatures. Maybe they can't live without it! We can't just come to another planet and harm other creatures just in mankind's  favor. We need to examine these creatures, and all others on the planet, before we can make anything in this planet ours."

"Nonsense", protested Harrison. "We need to put our own problems in front of others, that's the only way we can keep ourselves safe. We need to take this back to earth.!"

But the smart Jarvis wasn't just going to let down. "It might be dangerous," he said.

"Dangerous? How do you mean?, " Harrison asked.

"We don't know enough about this planet, and what's on it yet. On here this crystal might be a cure, but you don't know what effect it would have on earth. For God's sake, we don't even know if it's safe on this planet. Who knows , maybe it has side-effects? Maybe the healthy tissue it plant isn't even so healthy, but only looks that way."

"But ... Then how will we find out?,"' muttered Harrison.

"There's only two ways to find out," Jarvis said. "And that's to wait here, and do more research. Or to wait until something happens to me. But what's certain is: we can't leave this planet yet.  At least not till we waited a bit to see the effects the crystal had on me or until we find out more about it."

"Well... Ok", said Harrison, still muttering. "We'll start researching tomorrow. Let's all go to bed for now."