FIELDS W, X, and Y 

 Columns 68; 69 and 

 7 0; and 71 



25. Symbols available for Expansion of Fields W, X, and Y 



Field W: As the symbols of this field are defined, they would seem to encompass all basic 

 situations and distinctions for which the field is intended. Symbols 1 through 9 have not been used 

 by the CBCC, but only because they had been used previously for coding information no longer coded 

 because of the infrequency of its use; in another or a special coding project, the former use of Field W, 

 using Symbols 1 through 9, might be restored, if it is of particular importance, or those symbols might 

 be applied to an entirely different type of information, or used for some type of expansion of the use 

 now described for the field. In using Symbols 1 through 9, note that either Symbol * (the IBM 12 zone 

 punch) must not be used or Symbols A through I must not be used; the choice will depend on the com- 

 parative advantage of one or the other. Symbol R is still available, of the series formed by using the 

 IBM 1 1 zone punch (letters J through R) and all of Symbols S through Z are available (formed by using 

 the IBM zone punch). 



Field X: Two IBM zone punches (Symbols * and #) have not been given unique meanings in 

 Column 69, so they have been available for forming letters A through R in that column. (The zone 

 punch is used in Column 69 for Criteria 01, 02, 03, and 04. ) None of the IBM zone punches (Symbols 

 *, #, and 0) have been used in Column 70 and therefore all numbers and letters have been available 

 in that column. The criteria of Field X have been organized by types, there being certain resemblances 

 between the criteria listed that allow them to be related into series, such as those in the 0- series, 

 in the 1- series, in the 2- series, etc. Since there are fewer criteria in some of these groups than in 

 others, there are fewer symbols of Column 70 available in some groups (the 5- series, e.g. ) than 

 others (the 3- series, e.g.). Nevertheless, in existing groups, the room for expansion is far greater 

 than any anticipated need, using numbers and letters in Column 70. In Column 69, numbers 4, 7, 8, 

 and 9 and all of letters A through R are available. In Column 70, all letters are still available and, 

 in most of the groups of criteria, most numbers are still available. IBM punched card retrieval is 

 always more simple when only numerical punches are used and, for that reason, the CBCC would prefer 

 using only numerical symbols when this restriction is practical. If this restriction is observed, 

 symbols of the 5- series of criteria are exhausted, except for 56 (which was used earlier by the CBCC 

 to code synergism and which therefore the CBCC would probably not subsequently use without retrieving 

 all data coded by Criterion 56 and recoding with Criterion 62). In summary, if only numbers are 

 used in Field X, there are four symbols available in Column 69 for new criterion series and, for each 

 series other than the 5- series, a variable number of symbols are available in Column 7 for new 

 criteria of that particular type. If letters should be used for symbols, 22 symbols are available in 

 Column 69; 26 or more are available in Column 70 for each of the symbols used in Column 69. 



Field Y: The CBCC has used a maximum of nine symbols in grading evaluation (in some cases, 

 fewer than nine), corresponding to the nine basic punching positions on the IBM card. Thus, it has 

 been possible to restrict coding in Field Y to numerical symbols, avoiding the more complicated 

 retrieval when the IBM zone punch is used for making letter symbols (with the exception of Criteria 62 

 and 02 which have used the letter A and the zone punch). This means that letters B through R are 

 available for other uses or for additional evaluation gradations. 



26. Files of coded biology data arranged by coding in Field W, X, or Y 



The CBCC has not established a special file of biology data arranged according to entries in 

 any of Fields W, X, or Y. Retrieval is seldom demanded from these fields as a preliminary step, but 

 only as a secondary step after selection of cards based on another type of information such as the test 

 compound, specific biological state of process acted on, test organism, etc. 



27. Double coding in Fields W, X, and Y 



In none of Fields W, X, and Y are two entries ever made. Field W may be coded with Symbol * 

 along with any one of Symbols J through Q and Field Y may be coded with Symbol * or # along with any 

 one of Symbols O, A, and 1 through 9, but this is not double coding in the sense of coding a variable 

 or a range of one type of Information. The asterisk in Field W indicates an entirely different type of 

 Information than Symbols J through Q. When Symbol * is coded in Field W with any of Symbols J 

 through Q or when Symbol * or # is coded in Field Y with any of Symbols 0, A, and 1 through 9, both 

 symbols in the column are punched on the same IBM card in the column. 



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