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tissue of bi'anch-bases and of crusts; full-growo. 



tie 30 together: 



ooi.l. : l.IX + -13. X + 2. XI + 14. XII 



col. 2. : 5.1 + 5.11 + 5. III + 3. IV + 3. V + 3. VI + 3. VU 



col. 3. : l.I + 5. III + 11. IV + 8.V + 4.VI + I.VII 



col. 4. : l.VI + 6. VII + 9. VIII + 5. IX + 8. X 



tissue of bianch-tops; vigoi-ousl/ growing. 

 the 21 together: 



col. 1. 

 col. 2. 

 col. 3. 

 col. 4. 



5. X + 16. XII 



2. 1 + 4. III + 1. IV + 4. V + 5. VI + 4. VII + 1. IX 



l.I + 7. III + 10. IV + 2. V + l.VI 



•l.III + l.VI + 11. VII + 6. VIII + 2. IX 



tissue of very young sponge-disks (2 — 

 5 m.M. diameter): vigorously gi'owing. 



the 9 together: 

 col. 1. : 2. X + 7. XII 



col. 2. 

 col. 3. 

 col. 4. 



l.ll + 4. IV + 1.V + 3. VI 

 3.I + 1.II + l.ItH-l.IV + 3.V 

 1.1 + 1.111 + 2. VI + 5. VII 



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tissue of brancli-bases and of erusts: full-grown. 



the 20 together: 



i-ol. I. :(!. Il + l.III + 2. IV + 5. V + 4. VI + 2. Vil 



col. 2. : 15. 1 + 3. II 



col. 3. : 2. II + 3. V + 9. VI + 4. VII + 2. VIII 



col. 4. ; 2.IX + 4. X + 8.XI + 6. XII 



tissue of branch-tops; vigorously growing. 



the 15 together: 



col.1. : l.III + 1. IV + 2. V + 4. VI + 0. Vil + 1. VIll 



cnl.2. : 12. 1 + 2. II + I.IV 



col. 3. : l.III + 3. IV + 5. V + 5. VI + I.VII 



col. 4. : 2. VIll + 12. IX + l.XII 



tissue of very young sponge-disks (2 — 

 5 m.M. diametei'); vigorously growing. 



the 11 together: 

 col.1. : 4.II+2. 111 + 1. V + 3. VI + I.VII 

 col. 2. : 9. 1 



col. 3. : 1. III + 5. V + 3. VI + 2. Vil 

 col. 4. : I.VII + 4. VIll + 2. IX 



