Man vil se, at Dr. Lindahls Beskrivelse af Coenen- 
chymets Struktur afviger væsentligt fra Resultatet af vore 
Undersøgelser 1 den Retning. Hvor han har fundet fibril- 
lært Bindevæv med en Mængde Tvermuskler, have vi iagt- 
taget hyalint Bindevæv, rigt paa Saftkanaler og gjennemdraget 
af Tverkanaler 1 alle Retninger, forsynede med Epithel men 
uden Muskelfibre; og hvor han angiver, at Væggens ydre 
Halvdel bestaar af hyalint Bindevæv med stjerneformige 
Korpuskler, der have vi fundet et udpræget fibrillært Bin- 
devævslag, forsynet med spindelformige Bindevævslegemer. 
Vi tør antage, at Dr. Lindahl ikke har havt de fornødne 
Hjælpemidler, hvorved man er istand til med Sikkerhed at 
skjelne de forskjellige Væv fra hverandre, og at det er 
Grunden til, at hans Fremstilling er bleven mindre korrekt. 
Forresten ser det næsten ud, som om han har beskrevet 
sit Tversnit af *Skaftvåggen* omvendt; thi sikkert er det, 
at fibrillært Bindevæv kun findes paa den ydre Flade, hvor 
han har hyalint Bindevæv, og at dette derimod findes over- 
alt indad, hvor han har fibrillært Bindevæv. Kun Længde- 
muskler findes i Stokkens Coenenchym og disse 
Længdekanalerne. 
alene 1 
Polypkroppen er udvendig beklædt med et temmelig 
tykt Epithel (Ectoderm), der bestaar af flere Lag polyædriske 
Celler, fuldkommen lig dem, der findes paa Coenenchymets 
ydre Væg, og som tidligere ere beskrevne, — kun skulle vi 
bemærke, at en stor Del af disse Ectodermceller ere for- 
synede med rigt, brunt Pigmentindhold, der giver Polypen 
sin Farve, Fig. 42, a. 43, a. Imellem Epithelcellerne og 
nedsænket 1 Ectodermet gjenfinde vi de samme encellede 
Slimkjertler, som vi før have omtalt, — og 
stor Mængde tilstede her som paa Stokken, kun ligge de 
enkeltvis overalt; Grupper af dem træffes ikke her, Fig. 42, b. 
Indenfor Ectodermet er et meget bredt forgrenet, hyalint 
Bindevievslag, Fig. 42, c, der ved sine Forlængelser indad 
danner et Net med større eller mindre Masker, som udgjør 
Kanalsystemet, bestaaende af Længdekanaler, Fig. 42, d, 
og Tverkanaler, Fig. 42, e, beklædte med Epithel, dannet af 
aflange Celler med Kjerne og Protoplasmaindhold. Disse 
Epithelceller ligge temmeligt langt fra hverandre, Fig. 42, f; 
kun i de trange Kanaler ligge de aldeles tæt sammen. I 
dette Bindevæv iagttages foruden Bindevævslegemer ogsaa 
yderst fine Punkter, der sandsynligvis ere Aabninger for 
Ernæringskanaler, og paa dets indre Væg er et tyndt Lag 
Længdemuskler, Fig. 42, g, indenfor hvilket iagttages det 
tykke Lag af stærke, transverselle Muskler, Fig. 42, h, som 
beklædes af Epithel, dannet af flere Lag runde Geller med 
Kjerne og Protoplasmaindhold. Cellerne ere 0,011”” og 
Kjernen omtrent 0,002””, Tab. X, Fig. 46, a. 
de. ere i lige 
48 
It will be seen, that Dr. Lindahl’s description of the 
structure of the sarcosoma, differs, materially, from the 
result of our researches in this direction. Where he has 
found fibrillous connective-tissue with a multitude of trans- 
verse muscles, we have observed, hyaloid connective-tissue 
rich in secretory ducts, and penetrated by transverse canals 
in all directions, furnished with epithelium, but without 
muscular fibres; and, where, he states, that the exterior 
half of the wall, consists of hyaloid connective-tissue with 
stellate corpuscles, we have found, a prominent layer of 
fibrillous connective-tissue, furnished with spindle-formed 
corpuscles of connective-tissue. We venture to suppose, 
that Dr. Lindahl has not had the necessary assistance at 
his disposal, to place him in a position to distinguish 
with certainty, the various tissues from each other, and 
that, that is the reason his representation is not quite 
correct. Indeed, it would almost appear, as if he had 
described the sectional aspect of the wall of the shaft, 
reversed, because, it is quite certain, that fibrillous connec- 
tive-tissue is only found on the exterior surface, where, 
he describes hyaloid connective-tissue as present, and, that 
it, on the other hand, is found everywhere, interiorly, where 
Only longitud- 
inal muscles are found in the sareosoma of the stalk, 
he has observed fibrillous connective-tissue. 
and these only, in the longitudinal canals. 
The body of the polyp is, exteriorly, covered with a 
rather thick epithelium (Ectoderm), consisting of several 
layers of polyhedrous cells, exactly like those found on the 
outer wall of the sarcosoma, and which have previously 
been described. We would, only, remark here, that a large 
portion of these ectoderm cells is furnished with rich 
brown-tinged contents, which imparts the colour to the 
polyp (fig. 42, a, 43, a). Between the epithelium cells, 
and depressed in the ectoderm, we again find the same 
single-celled mucous glands which we have previously de- 
scribed, and they are present, here, in as great abundance 
as on the stalk, only, they are everywhere placed singly; 
groups of them, are not met with in this situation (fig. 
42, b). Inside of the ectoderm, there is a very broad, 
ramifying layer of hyaloid connective-tissue (fig. 42, 0), 
which, by it’s prolongations inwards, forms a reticulation, 
with larger or smaller meshes, and forms the ductiferous 
system, consisting of longitudinal canals (fig. 42, d), and 
transversal canals (fig. 42, e), covered with epithelium 
formed of oblong cells contaiming a nucleus and protoplasm 
contents. These epithelinm-cells are placed, pretty far 
apart from each other (fig. 42, f), and, only, in the nar- 
row canals do they lie perfectly close together. In this 
connective tissue, may be observed, besides the connective 
tissue corpuscles, also, extremely minute points, which 
probably, are openings for nutrient ducts; and on it’s inner 
wall, there is a thin layer of longitudinal muscles (fig. 
42, 9), inside which, is observed, the thick layer of strong 
transversal muscles (fig. 42. h), that is covered with 
epithelium, formed of several layers of round cells contain- 
ing a nucleus and protoplasm contents. The cells are 
0,011”” in width, and the nucleus is about 0,002”” broad 
(Pl. X, fig. 46, a). 
