PA Nai DY Evi. x, 
The particle within it, which appears in conftant moti- 
ori, is the ftomach 170 
Tts external parts; the head, fting, antenne, eyes, 
neck, breaft, legs and their nails, abdomen, whitifh 
part in the middle of the abdomen, and fkin 30, 31 
Various ftructures of the external {kin 37 
Brain 36 
Heart, not difcoverable by the Author 31 
Gullet B35 35 
Small gut, blind guts, or vafa varicofa, colon, cloaca, 
ftraight gut and anus, feces of the inteftines 34°35 
Spinal marrow, its origin and conftruction, ganglions, 
nerves, coat, pulmonary tubes, and conftruction of 
the nerves. 36 
Mutcles compofed of globules 31 
Abdominal mufcles defcribed 2b. 
Eyes and optic nerves 36 
Eggs, and number of them in the ovidudts, uterus, vul- 
va, cohefion of the eggs with the oviduéts, conftruction, 
and pulmonary tubes 365 37, 204, 205 
Pancreas, and its motion 33> 34 
Fat 21% Tendinous dorfal fpot 36 
Blood, confifts of tranfparent particles 31 
Globules of blood are perhaps particles of the wounded 
fat or vifcera ab. 
Trachez, and their numerous ramifications 
Are very difcernible i 
Uncertain if they caft any fkins, on the Loufe’s cafting 
its external {kin ib. 
Breathing-holes of the trachez, their inofculations, and 
diftribution all over the body ib. and 32 
Glue ducts, and bag 36, 375 204, 205 
215/122 
ab 
Stomach defcribed 33 
How it digefts the blood it has taken in 35 
its wonderful motions 34 
Ufe of the nails at the point of the fting’s fheath 34. 
Lice of blood animals, infects, and plants, the Author 
uncertain to what order they belong. 26 
Almoft all animals have their peculiar lice. 210 
Lice of trees, which belong to the fecond order 26 
Of plants, prepofteroufly fo called, belong to the fame 
order. f 15 
Loufe, Water, of Goedaert, very different from the 
common Loufe, belongs to the firft order of mutations, 
and is called by the Author the aborefcent Water- 
Filea..-..26. 
See Water-Flea. 
Lice of the Humble Bee, called Excitatores, by Goe- 
daert. ; 210 
Of the Whale, defcribed. 23 
LUNGS, the office of fanguification allowed them 
by the Author. : 119, 120 
M 
MA his generation like that of Frogs and Infe@s.. 
“MITES. 
“MICROSCOPE, thofe beft which have but one lens. 41 
104. 
See Acari. 
MOULDINESS, in what it confifts. 163 
MORDELL/:, or DRAGON FLIES, belong to the 
fecond order of changes 93 
Defcribed, ib. and following pages 
Catch their food flying in the air 
Of the manner of their copulation 
98, 99 
caft their eggs 
in the water. 99 
Their parts defcribed, 97, and following pages. 
14000 divifions in the eye of a Dragon Fly. 21 
Its Nymph not well defcribed by Authors 93 
Species of them preferved by the Author ib. 
‘The Nymph-Vermicle, or Worm of it. 97 98 
Various {pecies 100 
MORTEAU, of Rondelitius, what ? 99 
MOUFFET, his opinion of the Aurelia refuted. 10, 11 
MOTH, what? P. II. 98. How, and with what mat- 
ter it makes its houfe; for what reafons, and at what 
time it forms itfelf a new one. 99, 100 
Sometimes it makes a thread, and to what purpofe. 99 
How it moves about with its houfe. _ 1b. 
Moths, their external parts 99 
Various kinds of food, 26. Change inte Chryfallides, 7d. 
How they differ from the Phalenz Ae 
Many and various kinds of them, 25. __ 100. 
Moth, Bee-hive Moth, two kinds of them. 224, 225 
Butterfly, improperly called Moth, how it proves hurt- 
ful. 113 99 
See Butterfly no@urnal. 
MOLES, their eyes have likewife three humours, 48 
MUSK-BAGS, of Worms found in them, and their 
Nymphs, from whence Beetles iffue. Poy TOE 
MUSCLES, their fhells have a periofteum 64. 
The filaments of their fhells defcribed ibs 
.Thefe filaments, in other kinds of Mufcles; are called 
Byflus ; of which fine linen was made. 2B. 
Frefh water Mufcles, found in Holland, defcribed. 84, 85 
Mutcle, feparated from the thigh of afrog, how it may 
be difpofed for contraction. agli 123 
Mufcles undergo, when their nerves are irritated; acon- 
traction, like the natural contra@ion in all animals. 
Pep Els 12%, L2Z 
By no means grow thicker, but rather flenderer, at the 
time of contraction, their fibres, in the mean time; 
changing in their fituation; as is fhewn by variety of 
experiments. Pill. 124, and following. 
Are never found altogether deftitute of motion, whilft 
the animal lives. Pal, 125 
Even to perform any voluntary motion in the livirig ani- 
mals, fometimes requires at leaft a {mall degree of irri- 
tation. Peski. 125, 126 
In contraction difcharge all their contents; which occa- 
fions their whitenefs. BP odllee aS 
Occafions laffitude, by being too much diftended with 
blood. . Bealls 128 
Their condition, when firft about to move. . 129, 1 30 
‘Their tendons are not fixed in the bones, but themfelves 
become bony. ute 
Enumeration of their three feveral parts. 62 
Their contraCtion fuppofes a previous dilatation 3 and 
this is of three kinds. 130 
Requires no influx of the blood ; nor can it be demon- 
ftrated by the conftruction of the aorta. _ -P. II. 1297 
Spontaneous and voluntary contractions differ only acci- 
dentally, both being natural. P. If. 125 
‘The fibres, at the time of contraction, grow confi- 
derably thicker Lee gi 128 
Their motion in warm animals, in confequence of an 
irritation of the nerves, is not fo confiderable as that pro= 
duced in cold animals, by the fame means. _ P. II. 122 
Is excited in Frogs toa great degree, by the irritation of 
the nerves. 1s 
Is conftant on the antagonift Mufcles, or the Mutfcles 
an{wering thereto, cealing to act. Pe Un. aos 
Thefe would be no voluntary motion, without antago- 
nift Mufcles. 2b. 
‘There is no motion, where the antagonift Mufcles are 
equal. 1b. 
Why a frequent motion of the Mufcles excites heat in 
living animals. Pe Ad. 128 
Blood may be made to run freely from a vein by motion 
alone, without holding one’s breath. ibe 
The ftate of Mufcles, that have not as yet performed 
any motion, efpecially in infects. 12 
MUSCULAR MOTION, does not feem to require, ead 
any animal, any other communication between the 
nerve and and the Mufcle, than a bare commotion of the 
nerve, by any caufe whatfoever. P. WI. 123, 124 
Does not feem to require any local influx of the fpirits. 7b. 
Seems to be effected by fomething like that, which pro- 
pagates the found; from one end. of a beam, to the 
other end when ftruck. P. I. 124 
Its caufe feems to confift in a perpetual irritation of the 
origin of the fpinal marrow, and the nerves thence 
arifing, occafioned by the impulfe of the arterious 
blood. 2b. 125 
Iluftrated by the impatient herb of Dodoneus, and the 
pods of one of the Balm plants of F., Columna. 12 
Mufcular motion, the knowledge of it how difficult ; 
and how many things it fuppofes the knowledge of. 
te gar 
act : cag Bs TOT 5 12 
Short explanation, according to the Author. 130 
MUSCULAR FIBRES, their conftruction, 185 
