Spots 
Reading a medical dictionary at the British Museum convinces J. that he suffers from every disease known to science except housemaid's knee. Together with his friends George and Harris, along with the fox terrier Montmorency, he diagnoses the group as victims of severe overwork. They conclude that a fortnight's rowing trip up the Thames from Kingston to Oxford will restore their frail health.
Camping in the open air sounds romantic until night dampness and mosquitoes are considered, making a covered boat the wiser choice. Organizing simple household chores reveals how easily human effort turns into disaster. Uncle Podger exemplifies this phenomenon by attempting to hang a single picture, involving the entire household in injuries, lost tools, broken glass, and late-night failure.
Packing the hampers turns into a catastrophic struggle with crushed butter, trampled pies, and misplaced toothbrushes. Montmorency contributes by treating jam tins as enemies and sitting on everything requiring placement. At Waterloo Station, no railway employee knows where the train to Kingston is actually heading, forcing the travellers to bribe the engine driver to steer toward their destination.
Embarking from Kingston upon Thames brings the reality of heavy wooden skiffs and unpredictable river traffic into sharp focus. Fresh uniforms and boating jackets look immaculate on land but prove absurdly impractical for rowing under the sun. Early stretches past historic riverside towns highlight the gap between aristocratic elegance and the sweat required to move against the current.
Harris boasts of his flawless sense of direction, offering to lead strangers through the famous hedge maze at Hampton Court. His simple strategy of taking every right turn fails completely, stranding a growing crowd of tourists in the center for hours. The party only escapes after an experienced gardener leads them out, exposing the peril of unearned self-assurance.
Harris insists on singing comic songs at social gatherings despite lacking musical talent, pitch, or memory of the lyrics. His missteps trigger awkward silence and public embarrassment while he blames the piano accompanist for his own failure. Meanwhile, rowing past Sunbury reveals how easily river currents punish clumsy steering and poor coordination among oarsmen.
Towing a boat along the Thames riverbank appears effortless until the towline catches on submerged trees, passing barges, or distant spectators. Walkers engrossed in deep conversations frequently find themselves wrapped in thick rope and dragged into the water. George recalls absurd river fashions, proving that vanity on the water often ends in soaked velvet and public humiliation.
Pitching the iron hoops and heavy canvas cover over the open boat turns into an evening wrestling match. The canvas seems possessed by a malicious spirit, trapping the men underneath in darkness while they fight the fabric. Once secured, the tiny floating shelter provides a snug haven, though the hard wooden floorboards offer little comfort to weary bones.
A river morning begins with the infuriating discovery that a tea kettle refuses to boil if watched directly. Turning one's back and pretending not to care is the only reliable method to produce steam. Montmorency picks an unwise fight with a fierce local tomcat, learning a painful lesson about territorial street animals.
Floating past Marlow and Bisham Abbey brings historical reflections, haunted tales, and peaceful scenery. That tranquility is shattered by motorized steam launches, which kick up heavy wakes and send smaller rowboats rocking violently into reeds. The crew develops a burning resentment for wealthy launch owners who speed past without regard for manual oarsmen.
Entering quiet river backwaters near Henley reveals hidden channels choked with water lilies and overhanging trees. Navigating these narrow cuts requires careful pole-work to avoid getting stuck in thick mud or tangled in branches. Private landowners construct aggressive warnings against trespassing, leading to spirited arguments over public access to England's waterways.
River locks near Sonning act as meeting places where boats squeeze together, demanding skillful fending off to prevent crushed fingers. Preparing dinner on board becomes an exercise in improvisation and spilled fat. George attempts to play the banjo with disastrous musical results, prompting Montmorency to howl in genuine distress.
At a riverside inn near Streatley, the travelers admire a magnificent stuffed trout displayed in a glass case. Five local patrons, followed by the innkeeper, each claim to have caught the giant fish themselves, spinning elaborate tales of skill. The truth emerges when someone bumps the case, sending the trout shattering to the floor in a cloud of plaster.
Deciding to cook an Irish stew allows the crew to empty all leftover food tins into a single iron pot. George leads the culinary experiment, adding cold meat pies, scraped potatoes, half a tin of salmon, and potted lobster. Montmorency brings a dead water rat as his contribution, though the men decline to include it in the feast.
The weather turns vicious as unrelenting rain descends on the river near Oxford, soaking clothes, blankets, and spirits. Rowing against cold wind and gray downpours replaces the pleasant sunny drifting of previous days. Everything on board becomes damp, clammy, and cold, reducing the grand excursion to a test of grim endurance.
Trapped under the dripping canvas cover during a night of heavy downpour, the three friends play cards in total darkness and chill. Cold water drips steadily onto heads and down necks, turning the cramped cabin into a dismal wooden cage. Attempts at cheerful conversation falter as the cold seeps deep into their bones.
A second continuous day of pouring rain destroys any remaining enthusiasm for completing the planned river route. Cold meat, soggy bread, and wet bedding render the boat intolerable even for dedicated outdoorsmen. The men vote unanimously to abandon the river trip two days early in favor of dry land and civilization.
Leaving the boat with a local boatman at Pangbourne, the trio catches the first train back to London. Arriving in the city, they exchange wet trousers and shivering limbs for warm tailored clothes and dry boots. The relief of escaping the drowning river confirms that comfort is superior to misdirected perseverance.
Settling into a warm West End restaurant, the companions feast on hot soup, roasted meat, and fine wine. Montmorency enjoys his own generous dish of scraps beside a roaring fire. Raising their glasses, they offer a heartfelt toast to the success of their journey, celebrated best from the safety of a dry dining room.
A comedic Thames river journey revealing human absurdity, hypochondria, and the chaos of leisure.