ign scientific journal. The writer has applied thisapparatus to the scientific top (already described int.ese columns), in the manner fully illustrated by Fig.1. The construction of the attachment is shown inFig. 2, and Fig. 3 shcvs the direction of the air cur-rents. The apparatus consists of a… … skeleton sphere—if such an expression may be used—oftwo vertical circular disks intersecting each other atthe axis of rotation, these two disks being intersectedat the equator by another at right angles to the axis. The top being in rapid motion, the apparatus isplaced upon the stem, and being…
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