Washington Black’s proposal for a permanent exhibition of living aquatic life becomes the foundation of Ocean House, translating his observations of marine organisms into a public institution. The project brings his ideas into the world through practical experiment and collective work, yet its approval also exposes the unequal conditions under which he can claim recognition: Washington understands that Goff will be celebrated as its founder while his own contribution remains uncredited.

The Proposal and Its Scientific Premise

The idea emerges during a conversation with Goff and Tanna about the exhibition Goff hopes to mount. Rather than a gallery of dead specimens, Washington proposes a large hall fitted with enormous tanks and open-air enclosures for aquatic and other small animals. Visitors could come close to the glass and observe living creatures’ habits firsthand; the exhibition might operate permanently, like an indoor park. Tanna grasps the scale of the idea at once, calling it a menagerie of the sea, while Goff initially doubts that such a project is possible.

The proposal is not simply to display living specimens. It raises practical questions about sealed tanks, the animals’ need for oxygen, and how an entire collection could be kept alive for years. Washington identifies the exchange between animals and plants as a possible solution: marine animals consume oxygen and release carbonic acid, while plants absorb carbonic acid and release oxygen. His experiments also teach him that light is essential. Organisms he first placed in an opaque clay vessel die; in a clear glass container, plants receive the light needed for synthesis, and the combined specimens survive considerably longer. He manages the water by stirring it and drawing out salt water with a syringe.

From Experiment to Working Design

Washington tests the idea through successive experiments rather than treating the exhibition as a purely imaginative scheme. After observing that his first specimens have died, he collects more sea organisms and plants and places them in clear glass. The resulting survival of the specimens gives him a working basis for thinking about a larger installation, while the question of keeping animals and plants together links biological observation to the engineering problem of building dependable tanks.

He draws on the precise measuring skills he acquired while working on Titch’s Cloud-cutter, but the new project is his own design. In Halifax, he questions the foreman of a warehouse under construction about building methods, then uses what he learns to calculate a viable tank. He chooses plate-glass walls with parallel sides to reduce distortion and tests different bonding materials before settling on white-lead putty. Because lead can harm marine life, he devises an additional protective layer: once the putty has set, he coats the interior with shellac dissolved in naphtha and mixed with whiting, preventing the water from contacting the lead.

The prototype is a carefully specified object, not merely a proof of concept. Washington builds it over three evenings, largely shutting himself away from other people and working so intensely that his hands ache. The tank measures two feet long, one and a half feet wide, and half a foot deep, with a one-inch slate base. Medwin supplies discarded birchwood, which Washington shapes into supports; a glass-blower cuts four panes without charge, and Washington fits them into grooves in the slate and wood before sealing the joins. The experiment brings together materials, construction, and the living needs of the specimens, making the proposed exhibition increasingly practical.

Approval and the Creation of Ocean House

Goff carries the proposal to the Zoological Committee before leaving for London. The committee responds enthusiastically, gives the project land, and permits the reuse of an old timber building in the zoological gardens. The building is tall and narrow, set among black poplars; its repaired wing still bears a visible contrast between newer pale timber and older weathered boards after an earlier explosion and reconstruction. The site is not purpose-built, but adapting it makes the undertaking possible, and the group hopes to open to the public the following year. The exhibition is to be called Ocean House.

For Washington, approval is a decisive personal reversal. The Cloud-cutter had demanded his labor, but he had understood it as Titch’s vision. Ocean House, by contrast, is an invention he can recognize as his own: a public work conceived from his observations and made feasible through his calculations and experiments. Its acceptance offers the prospect that he can leave a mark despite a life shaped by expectations of labor and erasure.

Credit, Visibility, and the Exhibition’s Meaning

The project’s public success does not resolve who will be recognized for creating it. Washington expects that the institution’s history will name Goff, rather than an eighteen-year-old Black man with no formal scientific training. He does not reduce the problem to personal malice: he understands that Goff wants a late-career achievement and that Washington’s race, age, and lack of credentials make it difficult for him to approach the committee as an equal. The committee’s acceptance therefore affirms the idea while leaving the structures of public authority and attribution intact.

That tension persists as Ocean House takes shape. Washington later looks around the established displays and recognizes his work in the tanks’ dimensions and materials, the choice of specimens, and the arrangement of aquatic plants. He feels pride in a place that invites visitors to encounter creatures they regard as frightening and to recognize their beauty, but also anguish at seeing his calculations and labor embodied everywhere while his name appears nowhere. The exhibition thus has two connected outcomes: it makes living aquatic life available for sustained public observation, and it makes visible the difference between contributing to an institution and being credited as its creator. For Washington, the challenge is not only to build the exhibition but to decide whether he can accept that loss of recognition without abandoning the work and the people bound up in it.