EXPERIMENT STATION REPORTS. 195 



be arranged to enable one to find the subjects easily. Blank sheets 

 can be sandwiched into the records at any point. And, if there is a 

 rush job on. this system allows one register to be divided into two, at 

 any point, allowing two classes of notes to be taken at the same time, 

 by different persons or groups. 



The horizontal lines on the tw^o sides of a record sheet are exactly 

 oi>posite. This causes a line on one page to fit that of the next page, 

 and allow a record to continue there. 



Accession Number Book. Figs. 2 and 3.* 



When a lot of seed is received, it is given an accession number. Each 

 class of ])]ants receives a separate series of accession numbers. In 

 other words, each crop has a number book. The same blank is used for 

 all of the crops, the name of the crop being filled in at the top. The 

 two sides of the sheet are printed with columns to suit the opposite 

 pages. The headings are: number, variety, source, date received, amount 

 received, date entering nursery, and remarks. 



Hybrids produced at the station receive a new number when they 

 enter the nurserv. In this case, the varietv column shows the num- 

 l>prs of the parents, written as a common fraction. The number of the 

 dam becomes the denominator. 



MICHIGAN NUMBER BOOK. 



Individual plant number and strain number have already been ex- 

 plained. These follow^ the seed as long as it remains at the station. 

 We have also used them in sending small quantities of seed to farmers. 

 A pedigreed strain can seldomi be called by any existing name, and 

 our strain number is large and apt to be forgotten by farmers. There- 

 fore, as soon as quantities of these new productions are to be distributed, 

 we plan to send them out under a new series of numbers, called Mich- 

 igan numbers. These will differ from the accession numbers in that the 

 seeds descend from individual plants at the station. 



Registers. (Figs. 4, 5, 6, 7 and 8.)* 



Each crop has a register suited with columns to its needs. In gen- 

 eral, the opposite pages are used for one record. E^ch line takes care 

 of a plot. The columns on the left hand pages (Figs. 4 and 6) are suited 

 to a description of the mother plant, and those on the right hand pages 

 (Figs. 5 and 7) to the taking of notes on the progeny or increase plot. 

 The first three columns are: register number, plant or strain num- 

 ber, and accession number. Others vary with the crop in question. 

 Where a quantity of blanks are needed, they are printed. Others are 

 copied on the hectograph, or small quantities with carbon sheets. In- 

 crease and variet}' series are entered on the same blanks as are used 



♦For blank forms see pages 200-206 inclusive. 



