Ifi.S Tltirlii-slrih Annual Mreliiig 



Ml-. Clai'k: 1 1 lian,i;s? .Mr. Wires, liow lonp- a«iO did wo use 

 tile tidx' you i-im hci'c, and let it hano-? 



3Ir. Wires: In 1888 or '84. 



Mr. Charter: As I understand it, the riil)l)er suspends the 



tul)e. 



:\Ir. Chirk: Yes. 



Mr. Carter: Of course you couldn't suspend the tuhe witJi- 

 out a perfect curve. What I say is, that the funnel centers 

 the tnhe; if the top of the jar is perfectly round it holds the 

 tulje just exactly the right height, ahout a quarter of im mch 

 from the Ijottoni of the jar. 



Mr. Titcomh : Mr. President, I am sorry that these gentle- 

 men cannot find out what the trouble is with their tubes. 



'Sir. Clark: Xo trouble with my tuhe. 



Mr. Titcomh: There seems to me quite a little evidence to 

 confirm Mr. Carter's theory that it is not entirely satisfactory. 

 I was trying to get at the troul)le. l)ecause evidently it is a dif- 

 ference in the method of mani])ulati()n. Some have mentiomMl 

 the use of glass tubes, so I will say in that connection that wc 

 use at some of the stations the glass tubes suspended, at shad 

 station, where we find it desirable to use the McDonald jar \\ itli 

 closed top, to propagate shad. At other times, in order to use 

 tile same jar with open to}), we have the metallic ring, with 

 pitcher nose to it; and tlie same ghiss tnhes are \iscd. l)y building 

 a frame over the vow of shad jars, sim])ly a frame ot wooden 

 strips about three iiielu's wide. susi)ended a littk> ways ahove tlie 

 jai" and held in i)lace with wedges. In connection wilh the jars, 

 and over each jai-, Xhvw is a hole the size of the glass tube, or a 

 trille larger, through which the tul)(> is inserted, and then the 

 littJe rul)l)er gasket which is used with the McDonald glass tuhe, 

 is used on this wooden frame work, and that is the method of 

 suspending the tubes, while operating a large iunni)er of open- 

 top jars in the series. 



:\Ir. (ieer: :\rr. President, may I ask Mv. Clark what the ad- 

 \antaue of that tuhe is ovei- the ulass tulie ? 



