18 



Goncl. 3. After the. unification ' has been enforced, candidates for an appointment as 



co-operator must produce a documentary evidence stating that they have been employed 



in two foreign establishments at least and .for no less than three consecutive months on 



either side. 



Concl. 4. It is desirable to establish an international value-standard. 



Concl. 5. Instead of the term "use-value", the word "grade" should be adopted to denote 



the international value-measure. 

 Concl. 6. Reports of "international" analyses shall be worded as briefly and simply as 

 possible, and drawn up in the language of the country as well as in two other European 

 languages. 

 In connection with the foregoing the question arises which as to the part the inter- 

 national or unified analyses and the inferential analyses will assume in international trade 

 and agriculture. As to international trade, they will soon be of great significance; but 

 — as I said before — traders cannot always do without a noraaal "continental" deter- 

 mination of purity, nor can the agriculturists, applying themselves to growing seeds for 

 the trade do so. As far as the usual practice of agriculture is concerned, a mere deter- 

 mination of grade will suffice in the majority of cases. Indeed, the grade can serve 

 conveniently for all seeds of agriculture, horticulture and sylvic^lture, even for the seeds of 

 Beta-species. For that purpose the only thing to take into consideration for the factor 

 of Germinating power, is the percentage of srfund seeds or — as the case may be ■=^ 

 ■that of grains, which each will produce at least one germ. At present this is being 

 done at Paris, Copenhagen and Wageningen, and possibly at other institutes too. -From 

 an agricultural point of view no objections can be raised to this proceeding. Concerning 

 the determination of the purity the rule will hold that we shall include as purities all 

 particles which a slit-sieve with a 2 m. M. opening let pass, and moreover all pai-ts being 

 not beet root seeds, such as little stem, long bractaea, weeds, &c. (See Appendix B.) 



If the ideas I have unfolded here should be adhered to, I propose to lay down new 

 -Kegulations in which the introduction of the following practicable determinations shall be 

 aimed at: 



1. Determination of the grade of seeds. 



This determination will be made whenever the applicant did not state particulars 

 the nature of the examination, but has simply solicited "a determination", without any 

 further qualification. 



2. A determination of the purity. 



If solicited without any further qualification, the Continental method, as practised 



at Wageningen, has to be followed, observing the particulars more fully discussed in 



Appendix A. Besides a determination of a more Special kind may be solicited by the 



i applicant, e. g.: a determination of the noxious impurity, of the percentage of certain 



seeds of different species, &c., for which I beg to refer again to Appendix A. 

 •3. Special determinations connect-ed with germinative faculties, such as the percentage of 

 impervious seeds, of the germinating power of seeds having undergone some special 

 preparation, the germinating power of Beta-seeds. - 



4. An examination of several other qualities of the seeds, besides germinating power and 

 , purity, except such as mentioned sub 1 — 3, qualities, being practically of some importance, 

 such as an inquiry into the origin of the seeds, the grain-weight, the volume-weight, 

 the percentage of dodder seeds, &c. &c. 



This list is not a complete one, nor need it be. The thing that matters is to lay 

 stress upon applying the unification-method to the ordinary determinations, on the streng-th 

 of considerations having been fully expounded here, observant of the fact that, also in 

 future, various other determinations hitherto practised, may be executed at the special 

 request of the applicant, if the directors of the institutes do not object. 



Let us now ;pay attention to a closer consideration of the methods for determining 

 the 'purity. As. a basis .for thjs I may giye a more detailed description of the procedure 



