A fair amount has been written about Brouwer’s (or Freeke’s) tide mill, built sometime before 1661 on Gowanus Creek in what is now Brooklyn, N.Y. In Gowanus: Brooklyn’s Curious Canal, Joseph Alexiou calls it the earliest tide mill in New Netherland, which consisted of today’s New Jersey, southeastern New York and part of Connecticut. Its early date is reason enough for the attention the mill has received from historians. But it is also closely associated with the 1776 Battle of Brooklyn, when Washington’s Continental Army set it on fire to keep it out of British hands.

Anyone wanting to learn more about the mill’s history would do well to start with a report, “Brouwer’s or Freeke’s Mill,” just produced by Earl Taylor of the Tide Mill Institute. His report is brief but provides some history and several references to helpful books, articles, illustrations and maps. Most of these references are easily accessible on line via the links provided in the report.

Read “Brouwer’s or Freeke’s Mill.“

by Deane Rykerson
TMI President

“Merchant and Millwright, the Water Powered Mills of the Piscataqua” by Richard Candee is a fascinating article about the economy of early New England published in 1970. Although rarely differentiating between stream and tidal mills, the text explains how the resources of timber and water power were integral to the earliest European settlements.

From the first mill (1633-1634) contracted by John Mason on the Little Newichwannok River (presently South Berwick), sawing lumber was a primary activity. Several English maps included show the number of water powered mills before 1700 in the region. Although it is commonly believed that New England wood resources were mostly for ships’ masts, Candee shows that sawn lumber was also an important export.

Continue reading “Sawmills and the Economy of Early New England” →

By Deane Rykerson
TMI President

Tide mills had all the functions that stream mills did, from cutting lumber to milling flour. But did you ever wonder why gristmills are so much more vertical than sawmills? There is often a roof monitor or cupola in a gristmill. Well, form follows function and gravity is an important part of the function of grinding grain. If we follow a kernel of wheat from harvesting to being ready for bread, we can see how important height can be to aid the milling process. What goes up must come down.

At the top of the mill there is storage for the grain, fed by a hopper. The grain then descends to a screening process that shakes and sifts to remove gravel and sticks from the food product. At the next lower level the clean kernels are fed between the grinding stones, gradually working outward on the grooves of the bedstone. A rotating screened tube, called a bolter, can then be used to separate the coarser meal from the finer flour.

Continue reading “Grist Mills and Gravity” →

Even if you haven’t visited southern Maine, you’re still sure to enjoy The Tide Mills of Kittery, a new 34-minute video about tide mill technology and history, exploring several abandoned tide mill sites between Kennebunkport, Maine, and Hampton, N.H. By themselves, the superb aerial video segments by Jim White are enough to make viewing well worth your time.

This video premiered at the annual conference of the Tide Mill Institute, held on line in mid-November, and all are now invited to watch it by clicking the link at the end of this announcement. The drone’s eye views of tide mill sites gives us a new way to examine these somewhat hidden landscapes.  After decades of tide mill enthusiasts dealing with muddy boots or looking down from satellites with Google Earth, we now have a fantastic tool to see this history in our own backyards and in great detail.

The tour starts with a welcome by Bud Warren, a Tide Mill Institute founder and former president. Bud explains the role of tide mills in American Colonial history and describes how ingenious millers trapped seawater from the incoming tide and then released it through a channel to power water wheels or turbines. This mechanical power was then harnessed to grind grain, saw timber and perform other tasks formerly requiring human or animal muscle power.

Continue reading “New Tide Mill Video – Not Just for Locals” →

by Robert Gordon

A recent article on a rehabilitated tide-power installation describes it as a “newly revived link to lunar energy.” It isn’t. Tide power comes from the earth, not the moon. Think of a toy gyroscope. Spin the wheel and it gradually slows because of friction in its bearings and the air drag on its disc. The friction of tidal currents flowing over the sea floor is doing this for the earth. How do we know it is happening? Because the speed of the earth’s rotation about its axis is slowing. That means our day is getting longer, and the number of days in a month is decreasing. Not by much, but enough to be seen in the time kept by modern precise atomic clocks. But we already knew this before those precise clocks were invented, from the sex life of clams. Here’s how.

Some species of bivalves add to their shells day-by-day. Section a shell and you can see growth rings, like those on the end of a log or tree stump. Clams have to reproduce themselves, fairly frequently since they don’t have long lives. For some species the sex act is triggered by the full moon. Reproduction takes a lot of energy. This leaves less for growing a shell. Every month the spacing of the growth rings in the clam’s shell gets smaller for a few days. Count the number of large rings in the shell between the bands of narrow ones and you have the number of days in the month, about 30 in a modern shell.

Continue reading “Where Does Tide Power Come From?” →

By Deane Rykerson
TMI Acting President

Fall is definitely here and I can now reflect on the interesting summer we have had filming The Tide Mills of Kittery Maine.

This idea got its start last year when Fred Perry suggested we compile all of the presentations about Kittery tide mills from our annual 2019 conference. I thought it was a great idea but how much greater could this be if we included drone footage of our tide mill remnants. I thought about my friend and neighbor Jim White who is an excellent documentary filmmaker and FAA-licensed drone pilot. Then I realized that this was going to be a PROJECT (which usually involves MONEY). Luckily the Maine Humanities Council was offering bicentennial grants (Maine 200), so I thought, “let’s try.” After a commitment from the board of TMI and other sponsors, I got letters of support and completed the application by early January.

Continue reading “Filming a Tide Mill Documentary” →