SYMPATHETIC CELLS: NORWAY RAT BAS 
Binuclear cells 
The number of the binuclear cells in one ganglion in each 
case is recorded in table 6. Generally speaking, we may say 
that this type of cell is found through the whole span of life. 
TABLE 6 
Norway rat: Data for eighty individuals arranged in eighteen groups according 
to the decreasing value of the percentage of water in the brain. This is indicative 
of increasing age. Under the ‘number of cells’ the number of-any class of cells in 
one ganglion of each individual in which such cells occur is given. Thus in the 
first group one individuals showed three binuclear cells, but no pigmented or vacuo- 
lated cells were found. In the fifteenth group binuclear cells were found in four 
out of the five individuals, pigmented cells in four, and vacuolated cells in one 
AVERAGE 
pale OF; SOREENE: AVBRAGE NUMBER OF CELLS IN INDIVIDUAL CASES—ZEROS OMITTED 
WATER IN WEIGHT a ae eo ee Sa he os hee Sash” 
Me | Bs (otal (THs Binuclear Pigmented Yacue: 
grams 
iL Fe 33 88.33 11 3 — _ 
2 il 3 87.98 iil 1 _ — 
2 1 3 84.42 21 3,3 =_ — 
~ 3 i 81.45 29 eal — — 
2 2 4 80.30 67 1 _ _ 
1) 3] 4| 79.83 40 indies) = = 
3 1 4 79.43 46 Mpc Loa | — —- 
3 2 5 78.87 119 11 Sy, toh 8 — - 
2 3 5 78.69 120 Up Oy ap oh 2 — 
1 4 5 78.47 183 5, 9, 2, 4 I = 
3 2 5 78.41 123 By! _ _ 
4 i 5 78.29 201 2, 2, 4, 14 2:13 — 
See Bula tSP) W314 220 5, 2, 10, 1 digs 3 
3 2 5 78.01 236 Uo & ley! 3 
4 1 5 77.60, 240 Pos Pas MO) 9, 3, 15, 4 1 
1 4 5 Ula 189 5, 2, 4, 2 85, 3, 2, 6 — 
2/3] 51 77.00 279 2,1,1,2,2 1, 2,5 
5 1 6 76.66 307 9, 3, 3,4 Py Spl evils al 1 
There are, however, exceptions, since, as the table shows, this 
type of cell is present in all the individuals couiposinie a group 
in two instances only. 
As can be seen, binuclear cells appear eantty in very small 
number and frequently only one is found in the entire ganglion, 
