400 



Motion of Gaseous Bodies. 



n. ;,:, 



50 139. 1 : 5 



50140. 1:5. 



53 Oil. 1 : 9. 



50 141. 1 : 6. 



53017. l : -I 





Accessories for Vacuum Pumps. 



. Plate for Vacuum Pump, 24 cm diameter, Figure 



Without Receiver. Lar^eM Receiver that can in- used: No. .">:{. 013 



4. < 



:>n,i40. -- idem, with Barometer Gauge -Mio mm high; Finnic .......... i>. 14.0 



."id, I IL'. -- idem, larger, 2S cm diameter, with Barometer Gauge .'WU mm high, sled cock 



with brass handle ............................... 4. l.~. o 



I.aijicsl Receiver tliat can l>c used: No. .">;!. 111.") ...................... I'. t>. l> 



), 141. -- idem, larger still, .'>-! cm diameter, F i <_MI re; \\ith Barometer Gauge .Him nun 

 hijrli, with electric lead under the receiver, plii.ir terminals can be taken off plate; steel 

 cock with brass handle ............................. 5. 



Largest Receiver iliai can In- n>cd: No. .).'{.(> it; ............... . ....... ii. 



\Vhcn usinjc Receivers Nos. 53,008 53.O14 it is not possible to employ tlie lead terminals of this 

 plate jis at least one terminal is COVITCI! over hy the receiver. 



c 1. -.'1,22, 



5. 



II. i> 



