Ward.- — Some Thames Bacteria . 
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Fig. ir. A potato-culture (revived), three days at 25° C. 
Fig. 12. a, a rodlet 2*5 x 1 /J. sown at 3 p.m. in gelatine-drop at 25° C ; b, the 
same, divided into four rodlets at 10 p.m. imm. 
Fig. 13. A similar culture showing the oscillating movements in the partially 
liquefied gelatine. In a the pair of rodlets together end to end ; b they have flown 
apart ; c come together again ; d again apart. This oscillating movement may 
concern both or only one rodlet at a time. 
Fig. 14. Similar culture, a rodlet fixed at 10.25 p.m.; b the same dividing at 
11 p.m. ; and c oscillating apart at 11.5 p.m. At 7 next morning the colony d f 
25 jx in average diameter, had been formed. 
Fig. 15. a, a rodlet fixed at 4 p.m. This remained at 15 0 C. through the night : 
at 8.15 a.m. next day it had given rise to 8-10 bacilli b forming a minute colony 
3 n diam. The temperature then slowly rose to 25° by 3 p.m., when the colony 
c had resulted, about 15 /x diam. At 8.30 p.m. the rodlets were actively swarming, 
but came to rest during the night. 
Fig. 16. A series showing division & c. of rodlets in gelatine, a at 10 a.m.; 
b at 10.20 ; c at 10.35 ; d at 11.40; e at 12.20 ; f at 12.45. t. = rising from 21*5° 
to 2 3. 5 0 (see p. 301). X V immersion. 
PLATE XXI. 
III. Rose-pink Micrococcus. 
Fig. 1. Plate-colonies at 15-20° C. for ten days : nat. size. 
„ Fig. 2. The same in a month : nat. size. 
Fig. 3. The same, six weeks, under £. 
Fig. 4. Stab-culture, five days at 20° C. 
Fig. 5. Agar-culture, three weeks at 25 0 C. 
Fig. 6. Potato-culture, fourteen days at 20° C. 
Fig. 7. Groups of cocci under T a x : a fresh ; b stained. 
Fig. 8. Broth-drop culture under X V, showing Sarcina-form : a at 11.50 a.m.; 
b at 2.30 p.m . ; c at 4 p.m. ; d at 9.50 p.m. 
Fig. 9. Characteristic groups from a strong culture at 20° C. on third day 
under showing the glandular botryoidal masses. 
Fig. 10. Gelatine-drop culture under imm. a at 5.55 p.m. ; b = 8.g p.m. ; 
£=11.40 p.m.; ^=9.10 a.m. next day; £ = 12 noon ; /= 2.10 p.m. ; ^=4 p.m. ; 
h ~ 9 p.m. Temperatures fell from 20° to 16 0 C., then rose to 22 0 C. 
IV. A Pseudo-Bacillus. 
Fig. 1. Plate-colonies : a on fourth day at 15-18°, under £; b after fourteen days 
at 20° C. Nat. size. 
Fig. 2. Plate-colonies at 20° after seven days. Nat. size. 
Fig. 3. Rodlets from an old gelatine-culture, x * x imm. 
Fig. 4. Rods stained with methyl-blue, imm., showing spore-like bodies. 
Fig. 5. A rod a in broth-drop at 17-5-19° C., under imm., showing 
