VOL. XXr.l PHILOSOPHICAL TKANSACTIONS. 371 



The second figure of M. Diipre, fig. 2, pi. 8, represents part ot the occipital 

 bone, with the first two vertebras of the neck, viewed from behind: 1, the 

 interior part of the occipital bone ; 1 2, the rnusculi recti minores ; 3 3, the 

 fourth pair of muscles mentioned by Dupre, which he calls the auxiliary to the 

 greater and lesser oblique muscles : these I take to be parts of the last men- 

 tioned recti ; 4 5, the first and second vertebrae of the neck. a. The mammi- 

 form process. These figures being very ill done, 1 thought it not amiss to add 

 2 figures of the same bones in tlie like position, done after the life ; not only 

 for the better explanation of the above-mentioned muscles, but some others 

 also, which M. Dupre may perhaps find in dissecting these parts, and take to 

 be new discoveries also. 



Fig. 3, pi. 8, represents part of the eliternnl surface of the basis of the skull, 

 with the fore parts of ail the vertebrae of the neck. The pricked lines denoting 

 the progress of the muscles on the bones. — aa, &c. part of the basis of the 

 cranium ; bb, the two mammiform processes ; cc, the processes styloides ; d, the 

 elongation of the occipital bone ; e, part of the foramen, by which the spinal 

 marrow descends ; aa, parts of the two condyliform processes of the occipital 

 bone, which are received by the first vertebra: 1 2 3 &c. the fore parts of the 

 seven vertebrae of the neck ; bb, the transverse processes of the first vertebra ; 

 cc, their perforations, through which the trunks of the vertebral veins and 

 arteries pass ; dd, the transverse processes of the second vertebra ; efghi, the 

 rest of the transverse processes of the vertebrae of the neck ; kk, parts of the 

 oblique ascending and descending processes behind the transverse ; 11, &c. the 

 foramina between the vertebrae for the egress of nerves from the spinal marrow ; 

 FF . . . . the rnusculi annuantes, by M. Dupre called rengorgeur oblique ; 

 GG. . . . the recti laterales, by him called rengorgeur droit ; hh. . . . the muscles, 

 'which he says are the fiexors of the first vertebra on the second; which I 

 rather ihink are employed in shaking the head, as tiiey arise from the transverse 

 processes of the second vertebra, and ascend obliquely forwards to the first ; 

 I. . . . the obliquus superior, which M. Dupre calls rengorgeur posterieur. 



Fig. 4, pi. 6, the hinder parts of the bones, represented in the preceding 

 figure, with pricked lines as before. — a, the occipital bone; bb, parts of the 

 lambdoidal sutures ; cc, that part of the occipital bone where the splenius, com- 

 plexus, and the rest of the muscles of the head cease to terminate; dd, the 

 mammiform processes ; ee, parts of the st)liform processes ; 1 2 3 &c. the back 



parts of all the vertebrae of the neck ; ff, the musculi recti minores ; gg 



the muscles which M. Dupre says are the auxiliaries to the greater and lesser 

 oblique ; which I take to be parts of the last mentioned recti minores, and not 



found distinct in all bodies; hh the recti laterales, mentioned by Fallopius; 



II the small muscles placed between the transverse processes of the first 



3 B 2 



