The Laboratory beside Boston Common

As described in The Road to Concord, Boston’s South Writing School shared a fenced-in yard with the militia train’s newer gunhouse.

In September 1774, the two small brass cannon stored in that gunhouse disappeared, even as British regulars stood guard at its door.

Frustrated Royal Artillery men hauled away the rest of the train’s equipment. Then came the outbreak of war, the siege, the evacuation. And Boston had it gunhouse back.

Except it didn’t have the train’s guns anymore. The town meeting sent a committee of Thomas Crafts, Paul Revere, and Thomas Marshall to ask Gen. George Washington for those brass cannon, but they were already on their way to the New York theater.

The state military establishment scrounged up more cannon, mostly old iron guns abandoned by the British military. But those weapons were in demand, needed to arm ships and guard the harbors. Leaving them in a building beside the Common didn’t make sense.

What do you do with a gunhouse that has no guns to house? We can see the answer in a report in the 15 Aug 1776 New England Chronicle about how the town celebrated the eleventh anniversary of the first Stamp Act protest: “a Detachment of the Train of Artillery, with two Field Pieces, marched from the Laboratory into King-Street.” 

The gunhouse was turned into a “Laboratory” or workshop for making weapons, especially artillery equipment. On 3 December the Massachusetts House formally discussed how “to have a laboratory established,” but even before its committee finished its work the 27 Jan 1777 Boston Gazette was telling readers to find Col. Thomas Crafts “at the Laboratory” if they wanted to store their gunpowder.

Crafts had been second-in-command of the train before the war. He’d tried for the rank of artillery colonel in the Continental Army in late 1775 but was rebuffed. Massachusetts then made him colonel of its own artillery regiment, and that job included overseeing the Castle and “the Laboratory on the Common.”

The man running that workshop was William Burbeck (1715–1785, represented above by his gravestone on Copp’s Hill). He had been storekeeper of ordnance at Castle William until the war broke out, then slipped away to become lieutenant-colonel and second-in-command of the Continental artillery regiment under Col. Richard Gridley.

At the end of the siege of Boston, Burbeck informed Gen. Washington that his commission came from Massachusetts, not the Continental Congress. He would therefore stay in Massachusetts, not heading down to New York (or serving further under Col. Henry Knox, thirty-five years his junior).

Burbeck immediately went to work improving Massachusetts’s military supplies. By 18 Apr 1776, the Massachusetts General Court discussed how to supply him “with Powder, wherewith, to prove the Cannon lately Cast for the Use of the Colony.” A year later, he was chosen as the Continental agent to inspect gunpowder.

In the spring of 1778 the state legislature approved regulations for the laboratory in Boston, and that October it unanimously chose Burbeck to be “Comptroller of the Laboratory.” 

A year later, the legislature appointed Burbeck captain-lieutenant of the Castle (under John Hancock as captain of the castle, who was soon more busy as governor). Burbeck remained comptroller of the laboratory, but in early 1782 the General Court determined that work had “greatly decreased,” so it adjusted his pay accordingly while still making him responsible for the facility.

These days we might raise questions about having a weapons workshop, possibly used for testing gunpowder, right next to a school. But the people of newly independent Boston didn’t see a problem. What could go wrong?

TOMORROW: Fire!