04 08 
05 09 
06 10 
07 11 
ee sd - 
En 
CONTAINING ALL THE GROUPS OF FOUR FIGURES IN WHICH A SQUARE CAN END. 
NUMBER FORMED BY THE HUNDREDS 
16 20 24 
OA) 
18 22 26 
19 23 27 
28 
29 
30 
31 
32 
36 
40 44 
4l 45 
42 46 
43 47 
48 
52 
53 
54 
55 
NUMBER FORMED BY THE UNITIES AND TENs 
AND THOUSANDS. 
60 64 68 72 76 80 84 88 92 96%) XX XX XIII XXI IX Ix 
01) 21/41) 61/81)04)24/ 44) 64/84/16/36/56/76/96/09/29/4916918g 
GIs "65 GO 78:77. 180 -8be. 89) Gan OTA Sai iS Paice is XIX) |X} IX 
62 66 70 74 78 82 86 90 94 9D xX) x Xx PAIS OR oR 
63) OUR 7 er 7088 87 LON 95, OD Dd Dd ed Dab ape x) x 
The numbers printed in fat type can terminate in 25. 
Example: A square may terminate in 4164; for the intersection of the row of 41 with the column of 64 
is marked by a cross (X). A square cannot terminate in 4156; for the intersection of the row of 41 with the 
column of 56 has not been marked. 
