96 
A NEW MODIFICATION OF THE VEHMOREL NOZZLE. 
In applying the Bordeaux mixture and other copper preparations 
with the Yermorel nozzle (Fig. 1) it often happens, especially after the 
pump has been used lor some time, that the degorger A when pressed 
forward for the purpose of clearing an obstruction in the orifice B does 
not slip back of its own accord, and in consequence the liquid rushes out 
at 0 until it is checked by the operator reaching forward and pulling 
the rod down with his hand. To remedy this difficulty as well as to be 
able to suddenly stop and start the flow of liquid, which in certain kinds 
of work is often desirable, we have had constructed the nozzle and 
lance figured at 2 and 3. It will be seen that the spring C (Fig. 3) and 
the rod D are practically the same as those in use on the Baveneau noz¬ 
zle figured and described in Bulletin Xo. 5 of the Section of Vegetable 
Pathology* Fig. 2 shows the modified nozzle natural size in section 
with the orifice G closed by the degorger E. The liquid entering the 
chamber at F is prevented from escaping at the back of the nozzle by 
the packing A, through which the degorger E works, and which is 
tightened by turning the screw of the stuffing box C. The brass spring 
D should not be fastened to the degorger E for the reason that it is 
often necessary to remove it so that the degorger may be cleaned and 
oiled. 
Mr. A. L. Holladay, our agent located at Charlottesville, Va., has 
used the nozzle and lance for some time, and in answer to our inquiries 
as regards its work, says: 
I like the apparatus better than anyl have ever used. The spray being 
readily and quickly cut off, without putting the other hand to the lance, 
renders it convenient in passing from one row to another, or in passing 
around the end of a row. Then there is no danger of losing the cup 
at the end of the degorger and having the liquid squirted back in your 
face or upon your clothes. Best of all, however, I like the way the de¬ 
gorger springs back of its own accord. With the old nozzle, when the 
lance is pointed downwards, the degorger often slips forward and then 
instead of spraying in front the liquid shoots out behind, which is very 
annoying. 
* P. 104. 
