BAIRD &.TATLOCK. (LOM)ON) LTD. 



The lower ends of the bundles are now raised out of the lymph by pulling up the piston, the air-cock is 

 closed and the receiver slightly exhausted. As the air pressure in the receiver is gradually lowered, the lymph 

 will be observed to run out of the tubes. Experience will soon tell the correct amount that must be withdrawn, 

 and when this has been done the air-cock is opened and the column of lymph will be observed to run up to its 

 former level, leaving the lower ends of the tubes free from lymph. 



The cap of the receiver is then unscrewed, the bundles taken out, the rings removed, and the open ends 

 rinsed in distilled or sterilised water to remove any adherent lymph. 



The capillary tubes are now ready for sealing. 



When the quantity of lymph to be loaded is very small, as happens towards the end of the operation, it is 

 best to load only one bundle at a time, placing it in the central hole of the horizontal plate, for the remaining 

 lymph naturally drains to that portion of the receiver directly under this hole. 



It is also advisable when loading the last of the lymph to admit air very slowly and allow the tubes to fill 

 gradually. 



One or two points occasionally require attention. 



The packing round the piston rod may become dry and cease to be air-tight. This can be remedied by 

 unscrewing the valve, repacking it with a little tow soaked in vaseline, and afterwards screwing the valve tight. 



The pump, especially in hot damp climates, wants careful attention, and the periodic renewal of the small 

 oiled silk valves contained in the piston and nozzle. If a good vacuum is not obtained, it is usually the fault 

 of the pump. 



The rubber rings in the cap of the receiver occasionally require renewal. 



,It will sometimes be found that when the lymph is thick and viscid, as soon as exhaustion is carried out to 

 a considerable extent the air entangled in the lymph causes the latter to froth up like bottled beer. Under 

 these circumstances, if the air-cock is opened the froth will at once subside. It may be necessary to repeat 

 this operation several times to get rid of the air. It is ; however, only very occasionally that this procedure 

 is required. 



748 749 750-751 



748 Lymph Tubes, capillary, 90 mm. long, about i-i mm. bore (in boxes of 1,000 tubes). 



A. Best soda glass, clear .... per 1,000 



B. ,, soda glass, brown 



C. ,, English glass, clear 



D. ,, English glass brown .... 



Special Quotations for large quantities. 



749 Iron Boxes, 41 by 4! by ij in., with lids, for sterilising lymph tubes each 



750 Glass Vessel, conical, for containing lymph, 1,000 cubic centimetres capacity, fitted with 



loose cover on top, with stand, ring, and clip ea ch 



751 Glass Vessel, 500 cubic centimetres capacity. Complete on stand as above 



752 Glass Vessels only with cover, 500 c.c., as in figure 750-751 



753 Glass Vessels only with cover, 1,000 c.c. 





 

 

 







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