44 NUKSKKV IXSPI'XTION 



co-operation in regard to care taken by greenhouse and nursery men. We 

 have asked always that all packing be carefully collected and burned and 

 have met with no opposition to this important ruling. In many cases it 

 is expensive and inconvenient to go to a town out of the Twin Cities for 

 each box of foreign stock shipped in and we have allowed the shipment to 

 be unpacked and packing 1)urned to await the iinal shipment in that locality 

 or until we had more time for work. So far, we feel this is satisfactory for 

 greenhouses, l)Ut of course for nursery stock which comes in the spring, 

 we would not care to try it. Stock from Holland and Belgium and l^Vance 

 came in even greater abundance than it has in years past. The imported 

 stock, as a rule, was in very good condition and but few pests — none of any 

 great importance — were found. In several cases we found an aiiundance 

 of aphids and of oyster shell scale; some few other minor pests which were 

 destroyed by dipping the dormant stock in tobacco solution. 



The inspection of foreign stock in the spring of the year was accom- 

 plished, for the most part, by the Deputy Inspector, but at certain times, 

 when large shipments of stock arrived at several places at the same time, 

 or an extremely heavy shipment at one place, help was secured from experts 

 in the Divisions of Plant Pathology. Horticulture, and Entomology. 

 Through the courtesy of these men, we were alile to keep the inspection 

 v.ork up to date. 



During the early part of the summer, an extended trip was taken to 

 trace some few shipments of mountain ash which originally came from 

 Michigan and on which we had evidence of the possibility of San Jose 

 scale l)eing present. In no case was the scale found on these shipments, 

 although many of the trees had died and been destroyed, so it was im- 

 possi1)le to determine if scale had l)een present. 



The summer inspection of nurseries was hampered to some extent 

 l)y the weather conditions in the early part of the season, but although 

 we had about forty more places to visit this year than last year, the sum- 

 mer work was completed so that it did not interfere with the inspection of 

 imported foreign stock which came in this fall. The amount of imported 

 stock from Europe is practically the same this year, liut it is coming in 

 very late — in many cases due to slow transportation after it reached the 

 port of New York; that is, on our own railroads. 



The coming" year, the imported nursery stock to be planted out, of 

 course, will be inspected, as in the past, and the summer work, we hope, 

 will be greatly helped by the fact that provision was made for more ex- 

 tensive field records and collections and closer co-operation with the vari- 

 ous sections of the Division of Entomology. During the past year, only 

 one nursery was found with nursery stock infested with San Jose scale. 

 This stock had been imported from New York State and lined out. This 

 nursery now has a modern fumigation house and fumigates all stock leaving 

 the premises, besides thoroughly spraying with concentrated lime sulfur 

 all trees near those which were found to he infested. This was the second 

 nursery in which San Jose scale has been found in the last two seasons 

 and provisions have been made in both cases to see that the scale was 

 destroyed and all stock fumigated before leaving the infested nursery. In 

 both these cases, the stock came from another state and was lined out in 

 the nursery where it was later found. We have been trying to gradually 

 build up the inspection work, so as not only to eliminate the possibility of 

 the spread of pests from nurseries, but also to make a survey' from year to 

 year of the various counties in which are found old orchards most likely to 

 be affected with some pest. Because of the fact that Holland stock is 

 so very free from pests and arrives in such first-class condition, and that 

 other states are not inspecting this stock. I should recommend that we do 

 not inspect Holland-grown and inspected stock for greenhouse purposes, 

 but the consignee should i>e advised to take every precaution to help us 

 keep out the various pests by carefully saving all packing and refuse and 

 burning same; also the boxes if they are made of old lumber; and carefully 

 examining each plant for the brown tail nest or the gypsy moth egg mass. 

 .•\s before stated, we should be advised of the arrival and receive the num- 

 ber of cases and their identification number. 



