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Content Published November 4, 2020

Ringgold Place House

Ringgold Place House or known as the 1900 block of Waverly Street is comprised of 16 rowhomes, each 14 feet wide by 20 feet deep, with the 9-step front stoops accommodating a raised basement kitchen at street level. Waverly is barely the width of a sedan, with no street parking. When these properties were built in 1862, the street was called Ringgold Place, after Colonel Samuel Ringgold. Stone inlays bearing that name can still be seen on the corner properties(reading, “The Ringgold Place Houses (Built 1862) have been registered on the National Register of Historic Places.”). Construction during the Civil War era necessitated the small size and simple design of the houses, due to the scarcity of materials in wartime.

The small size was also due to their original use as workers’ housing, likely for the Berkshire Cotton Mill located on the next block at 20th Street and Ringgold Place. While 1,000 square feet may seem petite for one family, it is possible that multiple families may have occupied each rowhouse on Ringgold Place! The multiple door (basement and first floor) entries lend themselves to subdivision, and the tendency at the time was to squeeze workers into small quarters and to make the most out of existing housing stock. By 1895 the Berkshire Mills was closed, and the homes promptly transformed into more fashionable abodes, largely encouraged by the growing influence of Rittenhouse Square.

In 1925, architect George Howe purchased the block, and proceeded to update the properties, clean the facades, and added some decorative elements. The corner property of 1900 Waverly served as his office while working on his acclaimed PSFS building. He sold the homes in 1934.

Ringgold Place formally changed to Waverly Street sometime between 1895-1942, and the block was added National Register of Historic Places in 1983. (solorealty)

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Content Published October 24, 2020

A sea of falling leaves

Not all leaves turn vivid colors in the fall. Only a few of our many species of deciduous trees—notably maple, aspen, birch, oak, and gum—produce truly stellar performances for our annual autumn spectacular in North America.

Several factors contribute to fall color (temperature, precipitation, soil moisture), but the main agent is light, or actually the lack of it. The amount of daylight relates to the timing of the autumnal equinox, when day and night are roughly equal, but nights are growing longer.

As the autumn days grow shorter, the reduced light starts chemical changes in deciduous plants, causing a corky wall of cells (called the “abscission zone”) to form between the twig and the leaf stalk. This corky wall eventually causes the leaf to drop off in the breeze.

As the corky cells multiply, they begin to seal off the vessels that supply the leaf with nutrients and water and also block the exit vessels to some extent, trapping simple sugars in the leaves. The combination of reduced light, lack of nutrients, and less water triggers the trees to start the process of breaking down the pigment chlorophyll, which contains valuable nutrients and is the source of the “green” in leaves. As chlorophyll is broken down and the green color fades, yellows and reds are revealed.

why-do-leaves-change-color.jpg Where Do the Bright Yellow and Red Colors Come From?

Once the green chlorophyll is gone, other pigments begin to reveal their bright faces. These pigments, carotenoids (yellow) and anthocyanins (red), are responsible for the lovely colors of fall.

Yellow carotenoids exist in the leaf all summer, but are masked by chlorophyll during the growing season. Red anthocyanins, on the other hand, are freshly produced by plants as fall conditions ramp up. Suprisingly enough, scientists aren’t enitirely sure why trees bother to produce a new pigment while otherwise trying to save their precious resources for the winter ahead. Some suggest that the bright red color could deter insect pests from feeding on leaves, or that red attracts birds that feed on (and spread) the trees’ fruit.

However, another interesting theory is that the red pigment acts as a sort of sunscreen for the leaves, staving off damage from bright autumn sunlight and allowing the leaves to stay on the tree for longer than they would if they were to remain green or even yellow.

Sugar trapped in autumn leaves by the corky wall is largely responsible for the vividness of the colors. Some additional anthocyanins are also manufactured by sunlight acting on the trapped sugar. This is why fall foliage is so sparkling after several bright fall days and more muted during rainy spells.

As autumn carries on, leaves begin to turn brown once all their nutrients are re-absorbed by the tree. The brown color is the result of the leftover tannins, a chemical that exists in many leaves, especially oaks. (almanac.com)

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