How to Plant an Iroquois Garden

Three sisters“According to Iroquois legend, corn, beans, and squash are three inseparable sisters who only grow and thrive together. This tradition of interplanting corn, beans and squash in the same mounds, widespread among Native American farming societies, is a sophisticated, sustainable system that provided long-term soil fertility and a healthy diet to generations.” 

“Corn provides a natural pole for bean vines to climb. Beans fix nitrogen on their roots, improving the overall fertility of the plot by providing nitrogen to the following years corn. Bean vines also help stabilize the corn plants, making them less vulnerable to blowing over in the wind. Shallow-rooted squash vines become a living mulch, shading emerging weeds and preventing soil moisture from evaporating, thereby improving the overall crops chances of survival in dry years. Spiny squash plants also help discourage predators from approaching the corn and beans. The large amount of crop residue from this planting combination can be incorporated back into the soil at the end of the season, to build up the organic matter and improve its structure.” Read more: 1 / 2 / 3.

Self-Trimming Wingsails

Self-trimming wingsail“Since the invention of aircraft, a similarity has been noticed between the operation of sails on boats and the function of wings of aircraft. Sails on boats provide thrust in a horizontal direction derived from moving air, and wings on aircraft provide ‘lift’ in a vertical direction to support a plane in the air, also from moving air (relative to the plane). In order to fly, wings had to have a certain degree of efficiency, and some experimenters have realised now that aircraft-type wings could be used on a boat and would be more efficient than sails.”

“Having tested wings on boats in place of sails (‘wingsails’) designers noticed another feature used on aircraft that would be useful to use in conjunction with wingsails – controlling the wingsail with another smaller surface mounted behind or in front of it (a ‘tail’). There are many examples of tails used to control the direction of bodies both in the water and in the air, and aircraft use them to adjust, to a precise degree, the lift or (angle of attack) of their wings.”

“If a tail is used attached to a boats’ wingsail, it can adjust the wing perfectly to every small change of wing direction, in this way relieving the sailor of this task, which is mostly guesswork and at best very approximate, and it can perform that job much better than any sailor can do. Such a wingsail/tail combination is referred to as a self-trimming wingsail.”

Read more: 1 / 2.

Classic Italian Racing Bicycles

Classic italian racing bicycle

The Vintage Italian Racing Bicycle Pool on Flickr has more than 1,000 pictures. Above: De Rosa, 1973, by classic8tubes. Related: Cars, out of the way.

Sand-Powered Water Wheel

“Out in the Bodie mining district, California, they have a peculiar motor in use. It is called an arastra, and consists of an overshot wheel operated by sand instead of water. A windmill runs a belt containing buckets, which carry the sand up to a big tank, just as grain elevators carry wheat in a flouring mill. A stream of sand is let out upon the overshot wheel and it revolves just as it would under the weight of a stream of water. The arastras move steadily at their work. When there is much wind, sand is stored up for use when calm weather prevails, so the arastras are never idle. It is perhaps needless to say that the sand is used because water is scarce. The arastra is an invention of a miner named Townsend.”

Quoted from: The Manufacturer and Builder, Volume 0016 Issue 2 (February 1884).

Micromachines: Decentralized Urban Services in South-Asia

VelochariotArchitects Damien Antoni and Lydia Blasco have compiled an interesting document that focuses on small-scale technology in countries like India, Vietnam, Cambodia and Thailand. They photographed, and made technical drawings of miniature taxi’s, family run water turbines, domestic rain harvesting systems, pedal powered kitchens, home digesters, and the like.

The architects consider their work to be a toolbox, a starting point for thinking outside the conventional norms and recepies. They argue that decentralized services are more flexible, provide more autonomy, and are more efficient in space, energy and materials.

Antoni and Blasco present, in their own words, an equivalent to Neufert’s “Architect’s data“, the book for architects that records standardized dimensions for centralized systems. “Micromachins” is written in French but the visuals dominate.

“Micromachins”, Damien Antoni and Lydia Blasco, 2011 [download the page to get the high resolution PDF-document]. Thanks to Yann Philippe Tastevin. Update: the architects have added a new link with colour pictures and English translation.

Gas Bag Buses in Shawan, China

Gas Bag Buses in Shawan China

This photo shows at least six operating gas bag buses in Shawan (“Sandy Bay”), Shandong, China, in 1965. I have added the picture to the article on gas bag vehicles. Cars and buses powered by uncompressed gas in large bags were used in many European countries in World War One and Two, and remained in use in some regions of China and other Asian countries until the 1990s. They are more than a historic curiosity, however. In a comment on our earlier article, Paul Nash notes:

“On further reflection, I think the best application for this system, and certainly the one with the least government regulations to hinder the process, would be for powering of farm equipment.

  • The gas bag could be installed on a frame on top of the tractor, or on a trailer behind, or a carrier in front or to the side, or some combination of these.
  • Aerodynamics are a non issue, and neither is the height of the bag.
  • There are no road safety rules to be dealt with.
  • The short range is often not an issue, the refueling station is never far away and the diesel engines can still operate on diesel alone if need be.
  • The gas bag system also eliminates the $4000 home compressor station needed to fill car CNG tanks from home.

And, of course, the farmer can produce the fuel himself, from waste material – manure, straw, even wood chips, instead of using the harvested grain for ethanol or biodiesel. A wood gasifier could also do this, but needs a warm up and cool down period – the gas bag can be used instantly and for short duration running – a common situation on farms.”

Read more about Gas Bag Vehicles and Wood Gas Cars (another answer to the limited supply of gasoline in World War One and Two).

Picture credit: Ray-Wu.