TOL. XIX.] PHILOSOPHICAL TRANSACTIONS. 85 



ascent towards the left subclavian vein. Before the thoracic duct, thus charged 

 with the chyle and lympha, empties itself into the subclavian vein, it receives 

 the lympha brought from the superior parts, all which, mixing together, are 

 soon discharged into the left subclavian vein, where meeting with the refluent 

 blood of the superior parts, passes with it through the descending trunk of the 

 vena cava, and joins with the refluent blood of the inferior parts in the right 

 auricle of the heart ; whence it is expelled by its contraction into the right 

 ventricle, when the heart is in diastole ; but by the systole, or contraction of 

 the heart, it is thence propelled into the arteria pulmonalis, through whose 

 extremities, in conjunction with those of the vena pulmonalis, it passes to the 

 left auricle and ventricle of the heart, from whence it is again discharged in 

 the systole into the aorta, by whose branches it is conveyed all over the body : 

 the three tricuspid valves in the right, and two mitral valves in the left ven- 

 tricle of the heart, opposing its return into the veins, and the semilunar valves, 

 of the arteria pulmonalis and aorta, preventing its ingress into the ventricles, are 

 sufficient to demonstrate the necessity of a circulation of this grand fluid of 

 the blood. 



A Catalogue of Plants groiving within the Fortijications of Tangier, in \673. 

 By Mr. Spottsivood, a Surgeon, who lived there ; and given by the Author to 

 Dr. Love Morley, who communicated it. N° 220, p. 230. 



Phytologia Tingitana, vel Catalogus Plantarum Tingitanarum. xQjS.* 



* To occupy as little space as possible, it has been judged proper to subjoin this catalogue, « iiich 

 is retained as a specimen of the vegetable productiveness of this part of Africa, in the form of a note 

 — Absinthium, 2 species ; angelica ; anethiim; atriplex, 3 species ; althaea ; aristolochia, 2 species ; 

 alkekengi ; acetosa, 3 species ; arum ; arisarum ; anagallis, 3 species ; aloes ; adianthum, 2 species ; 

 avena ; avena sterilis, v. bromos ; apium, 2 species; arbutus ; acus pastoris ; allium vulgare; aspa- 

 ragus, 3 species ; asperula fl. albo ; aster, 2 species ; aurantia malus ; acanthus, 2 species ; armeria, 

 2 species ; arundo, 2 species ; anagyris foetida ; alopecuros ; alsine, 2 species ; amaranthus, 2 species j 

 amygdalus dulcis ; anemones, variae species ; antirrhinum, 2 species ; apparine ; asphodelus albus race- 

 mosus; acacia /Egyptiaca ; ammi. — Behen. alb. v. ocymastrura ; bellis, 2 species ( beta, 2 species; 

 borago, 2 species ; buglossa, 2 species; branca ursina, v. acanthus ; brassica florida ; brassica, 2 species ; 

 bromos sterilif ; blitum, 2 species; beccabunga, v. portulaca mar.; battata, 2 species; blattaria, 



2 species ; bryonia nigra. — Centino ; calamintha; carduus, various species; carlina, 2 species ; car- 

 thamus, V. cnicus verus ; cnicus perennis ; cupressus ; cynoglcssum ; crocus, 4 species ; crithmum, 

 V. faenicul. marin.; chaerifolium ; chaniaeriphes, v. palma humil. ; cerinthe, 2 species ; chrysanthemum, 



3 species ; caulis, v. brassica saliva ; campanula, 3 species ; capsicum, 2 species ; clematis daphiioides, 

 V. vinca pervinca ; clematis, v. periclymenum ; corallina, 2 species ; costushortensis ; ccepa ; cucuraer; 

 cucumis asininus ; cucurbita ; cydonia malus; calendula, 2 species ; chamomilla ; cannabis aquatica ; 

 caltha palustris ; capilKis veneris ; cardamine fl. albo ; carvophylli variae species ; cattaria, v. nepeta • 

 caoda equina; cauda equina nuda ; centaurium, 3 species ; cauda muris ; ceteracli, v. aspleniura, 

 charaaepitys ; cichoreum, 2 species ; cicutaria; cochlearia, 2 species ; colchicum, 2 species ; conso- 



