4. Laboratory of mircobiological and technical agriculture. 
5. An agricultural and floral museum. 
6. A corridor for machines. 
%. A meteorological station. 
Sole Paragraph. A station that may be established in a 
region where there already exists a federal institution of similar 
kind, pertaining to agriculture in general, the installations above 
mentioned shall be reduced to numbers 5, 6, and 7 and shall be 
provided with a small laboratory for the mechanical analysis of 
the soil, and utensils and instruments necessary for the proving 
of seeds of useful vegetables, so that a choice or selection may be 
made and their identity, purity, quality and germanating energy 
may be verified, including in these experiments those which 
refer to plants that are injurious. 
Art. 17. To accomplish the ends proposed, the experimental 
stations ought to: 
1. Attend the consultations that may be held upon any agri- 
cultural question in their line. 
2. Execute gratuitously analysis of fertilizers, spices, plants 
and water, when required by the nearest federal institute, when 
it does not possess the necessary laboratories. 
3. Distribute selected plants and seeds. 
4. Study the diseases common to the plants cultivated and 
the means of combating them, and explaining these things to 
those interested. 
5. To publish yearly and distribute free of charge a bulletin 
devoted to the relation of the works done and the useful knowl- 
edge acquired relative to agricultural and rural industrial sub- 
jects, and especially the results obtained as to the most practical 
and economic method of cultivating the trees that produce rub- 
ber, and the most profitable subsidiary plants, as well as the best 
methods of the treatment, conservation and packing of the 
products. 
Art. 18. There shall be admitted to the experimental 
stations, persons who wish to gain a practical knowledge in any 
of the sections, at the discretion of the Director, who shall fix 
the number of students in agreement with the chief of the re- 
spective section. 
Sole Paragraph. On equal terms, apprentices between 15 
and 18 years of age, shall be admitted, the numbers to be 
determined by the respective Director, with the approval of the 
Minister, who shall have daily tasks corresponding to their 
capacity and aptitude. The Director in the name of the Minister 
shall give a certificate, on which shall be indicated the work that 
has been done, to all those who have completed their appren- 
ticeship. 
ve 
