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Plant Tissue Culture 



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Fig. 42. Equipment used in making hanging-drop cultures and 

 other cultures of small masses of tissue. Top: wire rack for clear 

 '2'2 ■ l'l' mm. square cover glasses. .Middle row, from left to right: 

 1 X i! inch slides provided with three sizes of hollow-ground cavities; 

 concentrically grooved depression slide: heavy slide with deep flal 

 bottomed molded cavity; pierced slide i see Pig. '27); slide with 

 ylass ring (Y;in Tiegham cell); slide with removable, ground, 

 pierced plate, without and with suspended culture. Bottom vow, 



left to right: small embryological watch glass with round bottomed, 



molded cavity; Mnximow einbryological watch glass with tl;it pl.-ito- 



glass bottom; two sizes of chemical watch glasses in Petri dishes, 

 used as moist chambers, as employed by Pell for tissue and organ 



cultures. 



