( m ) 
Experiments of the Vibrations of the Dipping Needle, begin- 
ning with an Arch of io Degrees, with the Times in which 
ico Vibrations were perform’d, 
172.3 h , 
April 1, about 7—15 Afternoon. 
1 11 
Fird 50 in 3= 2 
Lad 50 in 2—45 
The 100 in 5 —47. Dip 740=2 5 
May 20. / ,j 
Fird 50 in 3=11 
Lad 50 in 322: 1 
The 100 in 6 = iz 
' Repeated the Needle being new 
touch’d. 
Fird 50 in 2 —38 
Lad 50 in 2=23 
The 100 in 5-2= 1. Dip 74—35 
Air'll 2. in the Evening 
Fird 50 in 3 = 3 
Lad 50 in 2—43 
The 100 in 5 —46'. Dip 74—20-]- 
April 3. about 4 in the Afternoon. 
Fird 50 in 2=252 
Lad 50 in 2=39 
The 100 in 5 =31. Dip 74 -50 
Repeated again aboutan Hour after 
Fird 50 in 2 = 38 
Lad 50 in 2 =20 
The 100 in 4—58. Dip 74=30+ 
Repeated about an Hour after. 
Fird 50 in 2—53 
Lad 50 in 2=35 
The 100 in 5—28. Dip 74=50+ 
May 21. about Noon 
Fird 50 in 22=41 
Lad 50 in 2—28 
The 100 in 5= 9. Dip 74 =50 
April 4. about 11=15 in the Morn- 
Fird 50 in 2 =54 
Lad 50 in 2 = 50 
The 100 in 5=224. Dip 74—50-f- 
May 23. about 12=45 
Fird 50 in 2=40 
Lad 50 in 2=27 
The 100 in 5= 7. Dip 74=40 
April 28. about 5=15 Afternoon. 
Fird 50 in 2=48 
Lad 50 in 2=16' 
The 100 in 5—; 4. Dip 74=58 
Repeated 
Fird 50 in 22=47 
Lad 50 in 2— 16 ] 
— - ] 
The 100 in 5= 3. Dip 74—58 
May 25. about 3=30 
Fird 50 in 2=41 
Lad 5c in 2=30 
Fhe ico in 5=211. Dip 742=40+ 
May 27. about 6 =30 Afternoon. 
7 ird 50 in 2=41 
Lad 50 in 2=28 
iThe ioo in. 5 — 9. Dip 74=50 
