No. 29. One ebonite rod, 1¾ in. long, with special surface, used to support the insulating table, No. 43 (I T, [Fig. 32]).

No. 30. One piece of flannel cloth, 7 in. square.

No. 31. Six sheets of tissue-paper, each 4 in. square.

No. 32. A few feet of white cotton thread.

No. 33. A few feet of black silk thread.

No. 34. One support base (S B, [Fig. 56]). This is of thin wood, about 3¾ in. by 6½ in., to one end of which is fastened a spool for holding the support rod (No. 35).

No. 35. One support rod (S R, [Fig. 56]), 7 in. long and 5/16 in. in diameter. This rod has a hole in each end. The small hole is for holding the support wire (No. 36); the large hole is for the ebonite rod (No. 29).

No. 36. One support wire (S W, [Fig. 144]).

No. 37. One wire swing (W S, [Fig. 29]).

No. 38. One sheet of glass, 4 in. square.