[Illustration:  Splashes from a Sphere In Milk and Water]

forced away from the sphere.  If the sphere is quite smooth the liquid rises up around and enclosing it in a sheath says Knowledge and Scientific News.

Reproduced herewith are a series of photographs showing successive stages in the entry of a rough sphere into milk and water, and the resultant “basket splash.”  The diameter of this sphere was about 3/5 in., and the height of the fall about 6 in.  Examination of the photographs shows that the liquid, instead of flowing over and wetting the surface of the sphere, is driven violently away, so far as can be seen from the photographs, the upper portion is, at first, unwetted by the liquid.  The gradual thickening of the crater wall and the corresponding reduction in the number of its lobes as the subsidence proceeds is beautifully shown.  Thereafter there rises from the depth of the crater an exquisite jet which in obedience to the law of segmentation at once splits up in its upper portion into little drops, while at the same time it gathers volume from below and rises ultimately as a tall, graceful column to a height which may be even greater than that from which the sphere fell.

** How to Make a Stick Pin [164]

A fine stick pin or button can be made from a new one-cent piece.  Carefully file out all the metal around the Indian head and slightly round the edges.  Solder a pin to the back of the head when it is to be used for a stick pin.  If a collar button base is soldered to the back of the head instead of the pin it can be used for a button.  These can be gold plated by a jeweler and then you will have a neat pin or button, or a good emblem for the Order of Redmen.

[Illustration:  Stick Pin]

** How to Make a Miniature Electric Locomotive [165]

A miniature electric railway is a thing that attracts the attention of almost any person.  The cost of a toy electric locomotive is beyond the reach of many boys who could just as well make such a toy without much expense and be proud to say they “built it themselves.”  The electric locomotive described herewith uses for its power a small battery motor costing about $1.  The first thing to do is to make the wheels and axles.  If one has no

[Illustration:  The Different Parts for Making the Electric Locomotive]

lathe, the wheels can be turned at some machine shop.  Four wheels are made from a round bar of metal, as shown in Fig. 1.  Each wheel is 1/4 in. thick and 1 in. in diameter, with a 1/16-in. flange and a 1/4-in. hole drilled in the center.  Each pair of wheels is fitted on a 1/4-in. axle, about 2-5/8 in. long.  One of the axles should be fitted with a grooved belt wheel, as shown.  Make the frame from three pieces of heavy brass, as shown in Fig. 2.