18 



imedens Dobbeltstjemerne ere meget sjeldnere. De første 

 ere 0.148""" lange, 0.076""" luede. Fig. 44. 45; de sidste 

 variere noget, sandsynligvis efter det forskjellige TJdviklings- 

 trin, paa hvilke de befinde sig; de mest udviklede ere 

 0.120""" lange. 0.080""" brede i Enderne med et 0.028""" 

 bredt, nøgent Midtparti. Fig. 46; de mindre udviklede ere 

 indtil 0.088""" lange. 0.048""" brede i Enderne med et 

 nøgent Midtparti. 0.024""" bredt, Fig. 47. 48. Hist og 

 her sees en takket Kolle, 0.204""" lang, 0.088""" bred i den 

 tykke Ende. Fig. 4U. samt enkelte bladede Klubber. O.120"™ 

 lange, 0.068""" brede i den tykke Ende. Fig. 50. Men 

 foruden de nævnte Spilder rindes paa Basaldelen ikke saa 

 ganske sjeldent Firlinger i meget forskjellige Former og 

 Størrelser. De antage som oftest Korsformen, hvor ufor- 

 melige end disse Kors kunne være; enkelte Kors ere om- 

 trent lige lange sum brede, 0.116""" i Længde og Bredde. 

 Fig. 51. 52; andre have en Længdestok 0.140""" og en 

 Tverstok, 0.108""", Fig. 53. Sjeldnere nærme disse Fir- 

 linger sig Timeglas- eller Rosetformen, Fig. 54. 56, men 

 alle ere mere eller mindre besatte med Takker. Vorter 

 eller Blade, naar undtages en yderst liden, korsformet 

 Firling, som næsten er glat, og hvis Længdestok er 0.048" 1 " 1 

 og Tverstok 0.028""", Fig. 57. Bosetterne kunne være 

 • leK meget smaa og simple, indtil 0.060""" i Gjennemsnit, 

 Fig. 55, dels ere de større, 0.116""" lange. 0.104 brede og 

 rigt ornamenterede. Fig. 56. 



bistellates are much more rare. The first-named mea- 

 sure 148""» in length, and 0.076""" in breadth tigs. 44— 45); 

 the last-named vary much, presumably, aecording to the 

 stage of development in which they lind themselves; the 

 most fully developed measure. 0.120""" in length, and 0.080""" 

 in breadth at the extremities. and liave a bare mesial 



part that measures 0.028 1 in breadth (fig. 46); the 



less developed ones measure, up to 0.088""" in length. and 

 0.048""" in breadth at the extremities, and have a bare 

 mesial part. 0.024""" in breadth (figs. 47. 48). Here and 

 there, a spicate subclavate is seen, measuring 0.204""" in 

 length. and < >.( iss»'" i n breadth at the thick extremity | fig. 49) ; 

 also, a few foliaceous clavates which measure. 0.120""" 

 in length. and 0,068"™ in breadth at the thick extremity 

 (fig. 50). But besides the spicules mentioned there are, not 

 infrequently, found in the basal portion, quadruplets of 

 veiv variable form and size. These assume, most usually. 

 the cruci-form, however amorphous these cruci-forms may 

 be. A few cruci-forms are about as long as they are 

 broad, measuring 0.116""" in length and breadth (figs. 51, 

 52). Others have a longitudinal arm. measuring 0.14 

 and a transversal arm measuring 0.108""" in length (fig. 53). 

 More rarely do these quadruplets approacb to the hour- 

 glass, rn- rosetti-forms (figs. 54 — 56), but all of them are. 

 nu u-e or less. beset with spikes, warts or leaves, with the 

 exeeptimi of an extremely minute cruci-form qruadruplet, 

 which is almost smooth, and whose longitudinal ann mea- 

 sures, 0.048™" in length. and its transversal arm 0.028 . 

 (fig. 57). The rosettes maj be, sometimes, very small and 

 plain, measuring up to 0.060"™ in diameter (fig. 55), and, 

 sometimes larger, measuring 0.116""" in length, and 0.104 

 in breadth. and are also richly embellished, (fig. 56). 



deligst 



Paa Stammen og Grenene er Dobbeltstjernen almin- 

 nien varierer adskilligt i Form. Kogle ere temme- 

 lig spinkle og have et langstrakt Udseen de mtd forlængede, 

 takkede Ender og tre, næsten nøgne Partier, hvoraf det 

 midterste dog er det længste; disse danne en Overgang 

 til de mere sammensatte Stjerner og ere fra 0.084 — 0.108""" 

 lange og fra 0.040— 0.056""" brede med et nøgent Midtparti 

 fra 0.016—0.020""" bredt, Fig. 58. 59; andre ere brede, mas- 

 sivere, fra 0.088 — 0.104""" lange, med rigere takkede Ender, 

 der ere fra 0.052— 0.076""" brede; Midtpartiet er fra 0.016 

 —0.032""» bredt, Fig. 60. 61. Imellem Dobbeltstjemerne 

 sees hist og her dels Firlinger, der nærme sig Kors- og 

 Timeglasformen, ere rigt besatte med Takker og fra 

 0.112—0.120""" lange og omkring 0.080""" brede. Fig. 62 

 — 64, dels store, stærkt takkede Spindler. 0.180""" lange, 

 0.072""" brede. Fig 65. dels næsten glatte Stave med tak- 

 kede Ender. 0.124""" lange, 0.040""" brede, Fig. 66, og 

 endeli: 



h\. 



, enkelte bladede Klubber med Firlingens Mærke, 

 67. 



On the stem and the branches, the bistellate is the 

 most common spicule but varies considerably in its form. 

 A few are rather slender, and have an elongate appear- 

 ance. with prolonged, spicate extremities and three almost 

 bare parts, of which the medial one is, however, the Innl- 

 est one. These form a transition to the more complex 

 stellates; they measure from 0.084 — 0.108""" in length. and 

 from 0.040—0.056"™ m breadth, with a bare mesial part 

 measuring from 0.016—0.020""" in breadth (tigs. 58. 59); 

 others are broad, and mure massive, and these measure from 

 0.088 — 0.104""" in length. and have more richly spicated ex- 

 tremities measuring from 0.052 — 0.076""" in breadth. The 

 mesial part measures from 0.016 — 0.032""" in breadth (figs. 

 60. 61). Between the bistellates there are. here and there, 

 seeu quadruplets. which approach to the cruci-form and 

 hour-glass forms, and these are richly beset with spikes, 

 and measure from 0.112 — 0.120""" in length. and about 

 0.080""" in breadth, (figs. 62. 64); also, partly, large, strongly 

 spicated fusees, measuring 0.180""" in length, and 0.072""" in 

 breadth (fig. 65), and partly, almost smooth staves, with 

 spicate extremities. and measuring 0.124""" in length. and 

 0.040""" in breadth. (fig. 66), and. finally. a few foliaceous 

 clavates having the characteristics of the quadruplets 

 (fig. 67). 



