•Sea. VIL 
26 A Description of all the 
, I SHALL firft defcribe the ftrudure of the fat, and afterwards that of the 
mucilaginous, glandular, or fecerning organs. 
It has been obferved by Dr Havers (jf), that the marrow confifts of glo- 
bules; and, viewed through a magnifying-glafs, looks liked a clufter of 
t 
pearls. 
Malpighi us, and after him Morgagni, made the like obfervation concern- 
ing the fat elfewhere in the body; He was, however, doubtful whether the 
fatty globules were contained in a proper membrane ( 2 ). 
The globules in the fat have been fuppofed to be much larger than thofe of 
the marrow; and it has been, in the moftpofitive manner, denied by the learned 
Fr. Grutzmacher, who wrote on this fubje£t in 1 74^> marrow and 
fat are inclofed with a peculiar membrane (a ) : And, conliftent with this, the 
common opinion, fupported by the authority of Winflov/ (^), and by the Hill 
later authority of Heifter,' Haller, Lieutaud, Sabatier, Plenck, Leber, &c. (r), 
is. 
(j) Cl. Havers, Oft. Nov. 1691. p. 167. 
(z) M. Malpighii, Oper. Omn. Londin. i686. Be omento, pinguedine, et adipofis dudlibus. An 
vero finguli adipoli globuli propria rurfus inveftiantur pellicula oculus pertingere nequit. Mor- 
gagni, Adv. Anat. ii. p. i6. Tota adipofa inembrana eZ facculis conftat; facCuli autem pinguiferis 
globulis, quafi glandulofis acinis, referti funt^ 
(a) Fr. Grutzmacher, De Oflium Medulla, Lipf. 1748. § XII. In pinguedinis particula microfco- 
pio luftrata, corpufcula quidem in exterior! nimirum ejus parte invenimus, convexa et figura quadam 
irregular! prsedita, aft longe majora iis qute in medullae exteriore interiorcve fubftantia fuere obfer- 
yata. § XI. Pinguedo reque ac medulla nulla cingitur peculiar! membrana. — Contextus ille cellu- 
laris, in quo oleum animale five pinguedo continetur, fine ulla fere cellularum deftrudione inflari 
poteft. 
(b) Winflow, Tr. des Tegum. § IV. 69. Les bouchers gonflent la membrane adipeufe, &c.— ^ — 
70. Les interftices cellulaires font comme autant de petits facs remplis d’un fuc huileux, que I’on ap- 
pelle graifle. Tr. des Os Frais. 74. La moelle eftdivifee en une quantitddes veficules ou cellules 
membraneufes, qui tapillent les cellules ofleufes et communiquent toutes enfemble. 
(c) Heifter, Comp. Anat. 1732. p.73- §20. De pinguedine.— Haller, El. Phyf.T.I. p. 33. Cellulae 
adeo varise figure, adipi funt pro loculis; — ab uno ad omnes via patet. — Figura utcunque rotunda 
3 
