Nit Orchard, Pickers Wanted

Three Dimensional Colour Pickers

Colours are three dimensional data. However, all commercial colour pickers project three-dimensional (3-D) colour spaces into two dimensional (2-D) palettes. The projection often results in a set of colours perceptually inappropriate to describe the data they present. This paper initially compares several popular 2-D colour pickers and then describes some novel colour pickers which allow colour...

Diagnosis Wanted

Choosing the Right Cherry Training System: Spindle vs. Bush

Both the Vogel Spindle and Spanish Bush systems will allow for the development of a “pedestrian orchard”. A pedestrian orchard is defined as an orchard where two-thirds of the crop can be harvested from the ground, without the use of tall ladders (Fig. 1). Harvesting fruit from the ground greatly enhances worker productivity. In a study that I conducted in The Dalles, Oregon pickers were able t...

Wanted—Skulls

In order to determine the characters of a race, it is necessary that comparison should be made of at least twenty skulls. It is further desirable to have as many of the bones of the skeleton as possible, as comparison of pelvic and long bones give important results in determining race peculiarities. The Hunterian Museum, now under the direction of Professor Flower, F. E. S., is especially inter...

On Pólya’s Orchard Problem

In 1918 Pólya formulated the following problem: “How thick must the trunks of the trees in a regularly spaced circular orchard grow if they are to block completely the view from the center?”(Pólya and Szegő [2]). We study a more general orchard model, namely any domain that is compact and convex, and find an expression for the minimal radius of the trees. As examples, solutions for rhombus-shap...