ON EDUCATIONAL TRAINING FOR OVERSEAS LIFE. 295 



Agriculture. 



Sheep and corn are the foundation of agriculture of Salisbury Plain. 

 Sheep and corn and prosperity all interdependent, sheep give manure and lift of 

 water. 



Typical rotation : Double four-course rotation : — 



1 . Two root crops for sheep, as a preparation for two corn crops. 



2. Two grass crops for sheep and two corn crops. 



Roots, straw, hay, made possible ' folding ' of early maturity Hampshire Down 

 Sheep. History of Hampshire Down Sheep. 



Sheep runs ; West of England cloth mills. Dew Ponds, Lynchets. 



Celtic and Saxon type of farming. (During the Great War 200 acres of wheat 

 were common.) Big field methods and general prosperity are reflected in the farm 

 buildings, machinery, and implements, e.g. pressers, hay sweeps, tractors. 



Natural History : No outline of the work done is given, but this shows clearly 

 the connexion between the life on the Plain and the nature of the Plain itself. 



Mathematics, Surveying, and Booking are naturally introduced into the scheme. 



II. Interconvertibility of Energy. 



Experiments performed by hoys in Middle School in 1926 Summer Term as part 

 of an Educational Experiment. 



The following experiments were performed in 1926 (Summer Term) by a group 

 of boys in order to illustrate the principle of Interconvertibility of Energy. The 

 pages were taken from the Annual Report (which deals with the aims and methods 

 used in the school). 



A series of experiments and charts is shown to illustrate the fact that the various 

 forms of energy are mutually convertible. The subject is chosen in order to show 

 that all branches of science are involved when dealing with a fundamental law such 

 as the Conservation of Energy. This serves as an antithesis to ' Iron in the History 

 of Mankind,' where one substance is seen to permeate all science, history, and 

 geography. 



It may be found that certain experiments, although not in the same setting, seem 

 to occur each year. This brings out the fact that such experiments are illustrative 

 of more than one scientific law or phenomenon. 



Changes are shown between the following forms of energy, Mechanical, Chemical, 

 Electric, Heat, and Light. The experiments are arranged as far as possible in the 

 order of the adjoining chart. 



A demonstration of the telephone and the transmission and reception of wireless 

 telegraphy shows how a number of energy transformations are embodied in everyday 

 applications of science. Other important points dealing with the subject of energy 

 are dealt with in the following charts : — • 



(1) Natural sources of energy. 



(2) The sun as the original source of all forms of energy. 



(3) The work of Count Rumford and James Joule. 



(4) The gamut of Ether Waves. 



Changes of Mechanical Energy. 



Into. 

 Chemical. 



Sodium Amalgan, and Mercuric iodide 

 are taken as examples. 

 Electrical. 



Static Electricity is produced by the 

 rubbing of a vulcanite rod and its 

 effect is shown on a spray of water. 

 Current Electricity was first produced 

 from mechanical action in Faraday's 

 classical experiment on Electro- 

 Magnetic Induction. This now 

 forms the basis of the Dynamo. 



From. 

 Chemical. 



The Ammonia Fountain. 

 The Petrol Engine, at the Workshops. 

 Electrical. 



The reverse effect is shown on a silk 



tassel. 

 The mechanical effect of an electric 

 current was discovered accidentally 

 by Oersted. This effect is the 

 principle of the Galvanometer and 

 Electric Motor. 



