The End of the Tether
in Blackwood's Magazine (Edinburgh, UK) (Jul 1902 — Dec 1902):
Vol. 172 (Jul 1902): 
pp.0–155
Vol. 172 (Aug 1902): pp.154–303
Vol. 172 (Sep 1902): pp.302–435
Vol. 172 (Oct 1902): pp.434–581
Vol. 172 (Nov 1902): pp.580–728
Vol. 172 (Dec 1902): pp.729–878
pp.0–155 Vol. 172 (Aug 1902):
pp.154–303 Vol. 172 (Sep 1902):
pp.302–435 Vol. 172 (Oct 1902):
pp.434–581 Vol. 172 (Nov 1902):
pp.580–728 Vol. 172 (Dec 1902):
pp.729–878 - Collected as The End of the Tether in Youth, a Narrative; and Two Other Stories (1902)
- Subsequently serialized in The Famous Story Magazine (New York, NY, USA) (Jan 1926 — May 1926)
- Subsequently serialized in The Famous Story Magazine (London, UK) (May 1926 — Sep 1926)
View in Internet Archive BookReader (experimental). 
pp.1-20, 202-18, 395-408, 520-37, 685-702, 794-814.