T U B 



Splachnea. With capillary very fimple ftalks ; the ter- 

 minal pclta fmooth and membranaceous. Found in the Medi- 

 terranean fea. Of horn-colour.. 



CoRYSA. Sub-ramofe, fihform, papyraceous, jointed 

 with ovato-acuminated capfules, and dilatable mouth, and 

 terminated with cylindric armed tentacula. Found on the 

 Ihores of Holland and England. Arenaceous and reddifti. 



Affini.s. Simple, fub-annulated, foft ; with the tentacula 

 of the mouth encompafllng the papilla attenuated. Found 

 on the Englifh coaft, adhering to fuci, and akin to the laft. 



Fabricia. Stellated, with pinnated cirrhi, and fix rays 

 encompafllng the mouth. Found on the (hores of Norway 

 and Greenland, often in the filheries of rocks. Grey, green, 

 or white. 



LoNGicoRNis. With two fetaccous cirrhi, longer than 

 the tubule. Habitation unknown. 



MuLTicoRNi.s. With more than twenty cirrhi centrally 

 white ; body round and hyaline, tubule mace-like. Ha- 

 bitation unknown. 



Campanulata. With lunated creft ; orifices of the 

 vagina annulatcd ; body concealed within the vagina. Found 

 in the ftagnant waters of Europe. 



Repens. Crefted, with cirrhi on both fides radiated ; 

 vagina extended, tubule opaque, procumbent. Found in the 

 ftagnant waters of Northern Europe. 



Reptans. With lunated creft ; body traftile beyond the 

 vagina. Found in the ftagnant waters of Europe. Hyaline, 

 foft, with about fixty cilia. 



Sultana. With infundibuliform creft, ciliated at the 

 bafe. Found in the pools of Gottingen. 



Stellaris. Creiled, with peftinated cirrhi, brown, an- 

 nulated ereft tubule. Found in the fucus of the Baltic 

 , fea. 



Simplex. With eight linear cirrhi, and conic hyaline 

 tubule. Found in the fucus of the Norwegian fea. 



Spallanzani. With five plumofe cirrhi, pedtinated on 

 both fides, and cylindric, horny tubules, below incurvated. 

 Found in the Mediterranean fea. 



Membranacea. With a double concentric range of 

 fiftulous tentacula, and a membranaceous, contraftile, vifcid, 

 cylindric tubule inclofing the inhabitant. Found in calm 

 parts of the Mediterranean ; but doubted whether it belongs 

 to this genus. 



Tubularia Fojfilts, in Natural H'tjiory, the name of a 

 fpecies of coral found very often foffile in Germany and Italy, 

 and compofed of a great number of tubes, or longitudinal 

 pipes, often refembling fo many worms ranged perpendicu- 

 larly in the mafs. 



They are ufually found either in mafles of a lax ftone, or 

 in fingle tubules in thofe of the harder and firmer texture. 

 In thefe two ftates this foffil makes two very different ap- 

 pearances ; and, according to the different direftions in the 

 mafs, or the different views of them that the fections of it 

 place them in, they make a number of very elegant figures. 



TUBULATED Flower, Tubulatui)lof cuius, mBotany, 

 a term ufed by authors to exprefs thofe fmall flowers, a great 

 number of which go to compofe one large compound flower. 

 Thefe are called tubulated, by way of diftinftion from ano- 

 ther kind of them, which are, from their fhape, called I'tgu- 

 lated. The tubulated flofcules generally compofe the difli, 

 and the ligulated ones the radius of the compound flowers. 

 The tubulated ones are formed into a hollow cylinder, which 

 expands into a mouth at the top, and is divided into five 

 equal fegments, which ftand expanded, and in fome meafure 

 bent backward. 



TUBULI CoNCAMERATI, in Natural Hiftory, tlie name 



TUB 



of a genus of the Tubulus marinus, diftinguifhed abundantly 

 from all the others by its figure and inner ftrufture. 



They are long fhelly bodies, ufually either of a conic or 

 cylindric form, or elfe refembhng the dentales in fhape ; and 

 fometimes, but that very rarely, they have their fmaller end 

 bent and twifted round. They are compofed within of a num- 

 ber of hollow compartments, each of which communicates 

 with the next by means of a fiphunculus, whicli runs through 

 the whole length in the manner of the thick nautilus, or the 

 coniu ammonis. We know not thefe in their recent ftate 

 at this time, but frequently meet with them folTde in the 

 ftones brought from Sweden for pavements, and in fome 

 others. 



Some authors have called thefe by the name alveoli, con- 

 founding them with the conic body found in the belemnitae. 

 See Alveolus. 



Others have called them pyramidal entrochi, others obelifd 

 marmorei alveolares ; and they are the bodies defcribed by 

 Gelner and Aldrovand, under the names oi lapldes caude can- 

 cri, or cancrltes. Some late authors have called them alfo 

 polythalami't, and others cone-Jlones. Klein, de Tubul. p. 7. 



TuBULi Fojfdes, the name given by authors to the cafes or 

 tubules of fea-worms, found buried in the earth. 



They are in their native ftate of very vai'ious kinds, but 

 by different accidents attending them in their accidental one, 

 they are fubjeft to a multitude of other appearances. They 

 are found of very various fizes, fometimes complete, and 

 buried in the ftrata of e<irth or ftone ; fometimes they are more 

 or lefs perfeft, and are immerfed in maffes of the hidus Hel- 

 motitil, or feptar'ne, and in this ftate they make one kind of 

 lapis fyringoides, or pipe-flone ; but the moft beautiful ^Wn- 

 goides, or pipe-ftones, are the parts of the bottoms of (hips, 

 or pofts fixed in the fea, which have been pierced, in their 

 original ftate of wood, by thefe fea-worms, and afterwards 

 petrified with the cafes or tubuli of the worms remaining in 

 them. . 



Of thefe there are many beautifiJ fpecimens on the (hore 

 of the ifland of Sheppey, and in our clay-pits about London 

 and Richmond. 



Thofe tubuli called deiilalia et eiitalia, are not lefs frequent, 

 and found of various kinds in the clay -pits about London and 

 the hills of Yorkfliire ; but they are more frequent in fimilar 

 places in France and Italy. 



Tubuli La&iferi, or GalaBophori, in Anatomy, the canals 

 in which the milk is fecreted. See Breast. 



Tubuli Seminiferi, the innumerable minute canals com- 

 pofing the body of the teflis. See Generation. 



Tubuli Uriniferi, the fmall tubes terminating on the 

 papillae of the kidney. See Kidney. 



Tubuli Vermiculares, a name fometimes ufed by natu- 

 ralifts for certain fmall oblong and hollow fea-fhells refem- 

 bling worms. 



Tubulus Marinus, or Canalis, in Natural Hiftory, the 

 name of a genus (according to fome writers) of univalve 

 fhell-fifh ; the charafters of vtfhich are thefe : it is of an ob- 

 long figure, terminating in a point, and hollow within, fo 

 that it refembles a tube or horn. Thefe are alfo called by 

 the old writers dentalia, from their refembling the tooth of a 

 dog. See Dentalium, Conchology, and Shells. 



It has been a common error of authors to confo'.'. .d under 

 the general name of tubulus marinus, thefe (hells, and thofe 

 very different ones of the vermiculi marini, which make a 

 number of pipes or tubes joined together ; thefe, by their 

 number and joinings, have induced a late French author to 

 place them among the multivalve (hells, while the canales are 

 ufually fingle and feparate, and can have no title to any clafs 

 but the tubular univalve one. Aldrovand obferves, that the 

 1 1 tubuli 



