110 MARYLAND AGRICULTURAL EXPERIMENT STATION. 



orifice, or to each of the orifices in case there are two. To the end of the 

 tube is fitted one of the modifications of the Cyclone or Kiley nozzle and 

 the outer S or 10 feet are clamped or wired to a light pole or bamboo 

 fishing rod for convenience in elevating the nozzle into the larger trees. 

 The tank or barrel is mounted on a cart or sled and driven betw^een the 

 tree rows, one man driving and pumping and other holding and directing 

 the extension pole and nozzle. 



I have mentioned the cyclone nozzle for the reason that, all things 

 considered, I believe it, in some of its modifications, to be the best for 

 orchard work. The Climax nozzle manufactured and sold by the Nixon 

 >s"ozzle & Machine Company is also a good nozzle, but it is rather large 

 and clumsy, its spray hardly so fine, and it will not answer for fungicides 

 containing lime, since it clogs easily. The \'ermorel modification of the 

 Cyclone nozzle possesses a little attachment which quickly unclogs 

 the orifice when once stopped up, and is therefore preferalde. More- 

 over, neither the C'yclone nor the \'ermorel modifications is patented, 

 Avhich, other things being e(|ual, is in their favor, l^oth are manufact- 

 ured by Thomas Somerville (S; Sons, AVashington, T). C, and IJobert 

 Leitch & Sons, also of Washington, or may be made by any brass and iron 

 worker from the descriptions in my official reports. 



For application to nursery stock or to smaller trees one of the 

 smaller hand-pumps advertised by various manufacturers, especially 

 pump-makers, as hydronets or aquapults, will answer the purpose, though 

 better still would be the use of what are known as knapsack pumps. — 

 The price of these ranges from $10.00 to $20.00. 



IMPORTANCE OF THE MATTER: FENAL ADVICE. 



It i.s very doubtful whether the fruit-growers of the Eastern States 

 or whether those of ^laryland have yet awakened to a realization of the 

 importance of taking active measures to stamp out if possible, this 

 ]iernicious scale-insect, or at least to protect from it trees not yet affected . 

 Jt has been introduced within comparatively few years, and there is 

 therefore, an excellent chance of restricting its range, or of ridding 

 l)articular orchards of it. Prof. J. B. Smith, Entomologist of the 

 New Jersey Experiment Station, has issued a special bulletin upon 

 the insect, which is more widely distributed in that State than elsewhere 

 in the East and Avhich, in fact, as we have already seen, has been largely 

 distributed to other parts from that State. He closes his bulletin with 

 a series of recommendations which have been very widely distributed and 

 even copied in the official bulletins of other states, and which, though 

 excellent in themselves, are, I fear, rather calculated to discourage those 

 who have extensive orchards to disinfect. The chief of these recom- 

 mendations are as follows: 



