New York Agricultural Experiment Station. 349 



Classification of spray nosdcs. — Professor Booth classifies nozzles 

 according to their manner of forming the spray. 



" Class I. — The first class both in simplicity and date of manu- 

 facture is the solid, more or less round, stream. Here the water 

 emerges in the form of a solid stream and the spray is formed by 

 the action of the air upon this stream. No nozzles are now on the 

 market in which this is the sole method of forming the spray, but 

 it is one adjustment of several of the variable stream nozzles. A 

 high pressure is necessary in using such nozzles in order to secure 

 the velocity required to break the stream into a spray. These are 

 all long distance nozzles designed for the tops of trees, etc. The 

 fault with sprays formed in this manner is that they are not homo- 

 geneous throughout. The air acts upon the outside of the stream 

 first and when this is well broken up the center is still composed of 

 very large drops if not wholly inact. The following nozzles utilize 

 this method of forming a spray : Excelsior, Niagara, Seneca, Masson, 

 Calla, Bordeaux and Lewis' Patent. 



" Class II. — The second class embraces those nozzles in which 

 the spray is more or less broken directly by the action of the margin 

 of the outlet. In all sprays the disintegrating action of the air is a 

 factor but in this and the succeeding classes, owing to the fact that 

 the air has equal access to all parts of the stream its action is more 

 uniform than in the first class. Nozzles belonging to this class are: 

 Niagara, Pilter Bourdil, Seneca, Masson, and Bordeaux. 



" Class III. — The third class includes those nozzles in which the 

 stream, having passed the outlet proper, is broken into a spray by 

 striking against projecting parts of the nozzle. To this class belongs 

 Lewis' Patent. * * * 



" Class IV. — Nozzles in which a rotary motion is given to the 

 liquid in a chamber adjacent to the outlet and in consequence of this 

 motion the stream emerges in the form of a conical spray. In some 

 cases this rotary motion is given by the direction of the channel lead- 

 ing to the chamber, and in others it is produced after introduction 

 into the chamber by spirals in a spindle inside the chamber. To this 

 class belong all the Vermorels, Australian and Cyclone, 



