\r沉香\pj325.bmp\r
味辛，气微温。阳也。无毒。出南海诸国，及交广崖州。大类椿榉节多，择老者砍仆
。渍以雨水，岁久（木得水方结香）使皮木朽残，心节独存。坚黑沉水，燔极清烈，故名沉
香
。
二种虽精，尚未尽善。倘资
主治，亦可取功。若咀韧（音软）柔，或削自卷，此又名黄蜡沉也。品极精美
罕稀。应病如神，入药甚捷。堪
为丸作散，忌日曝火烘。补相火抑阴助阳，养诸气通天彻地。转筋吐泻能止，噤口痢痛可驱。
又浮而不沉水者，名
栈香，此品最粗；半浮半沉与水面平者，名煎香，此品略次。煎香中形如鸡骨者，
名鸡骨香。（凡入药剂惟沉而不空心
有朽路，若鸡骨中血眼而软
嫩也。）形如
名牛头香。并与沉香种同，亦皆品之粗者。难咀入剂，惟
（谟）按∶《衍义》云∶沉香保和卫气，为上品药。今人多与乌药摩服，走散滞气。独
行则势
弱，与他药相佐，当缓取效，有益无损。余药不可方也。
\r檀香\pj326.bmp\r
味辛，气温。阳中微阴。无毒。产南海昆仑，及江淮河朔。专入肺肾脏，通行阳明经
。醋摩敷恶毒止疼，水煎升胃气进食。腹痛霍乱可却，中恶鬼气能驱。又紫真檀香，
主恶毒
风毒。降真香 ，烟直上天；召鹤成群，盘旋于上。主天行时疫狂热，驱宅舍怪异乡
声。
小儿佩之，辟恶邪气。
（谟）按∶东垣云∶檀能调气而清香，引芳香之物上行至于极高之分。最宜橙橘之属，
佐以姜
枣，并葛根、豆蔻、缩砂、益智，通行阳明之经，在胸膈之上，处咽嗌之中，同为理气之剂
也。
沉香
味道辛，气微温。属于阳。无毒。出产于南海各国，以及交州、广州和崖州。大多像椿树和榉树的节疤一样多，选择老树砍倒。用雨水浸泡，年代久了（木头遇到水才会结香）使得皮层和木质腐朽残留，只有心材和节疤独自留存。坚硬黑色且沉入水中，燃烧时气味极其清烈，所以叫沉香。
这两种虽然精致，但尚未尽善尽美。如果用于主治疾病，也可以取得功效。如果咀嚼起来坚韧柔软，或者削下来自然卷曲，这又叫做黄蜡沉。品质极为精美罕见。治疗疾病如神，入药非常快捷。可以用来制作丸剂或散剂，忌讳日晒或火烘。能补益相火，抑制阴邪，辅助阳气，滋养各种气机，使其通达天地。能止住转筋、呕吐和腹泻，能驱除噤口痢引起的疼痛。
还有浮在水面不沉水的，叫做栈香，这种品质最粗糙；半浮半沉与水面平齐的，叫做煎香，这种品质稍次一些。煎香中形状像鸡骨头的，叫做鸡骨香。（凡是入药的药剂，只要沉香不空心且有腐朽的路径，如果是鸡骨香那种血眼状且软嫩的。）形状像牛头的，叫做牛头香。这些都与沉香同种，也都是品质较粗的。难以咀嚼入药，只能（此处原文有缺漏，推测为“不可入药”或类似含义，但根据指令不增添内容，故略过或依文意理解为仅指其形态特征，结合后文“难咀入剂”，意为难以咀嚼加入药剂）。
（陈嘉谟）按语：《衍义》说：沉香能保护调和卫气，是上品药物。现在的人多与乌药一起研磨服用，以疏散滞气。单独使用则效力弱，与其他药物配合，应当缓慢取效，有益无害。其他药物无法与之相比。
檀香
味道辛，气温。属于阳中微阴。无毒。出产于南海昆仑，以及江淮和河朔地区。专门进入肺经和肾经，通行阳明经。用醋研磨外敷可止恶毒疼痛，用水煎煮可提升胃气促进进食。腹痛霍乱可以消除，中恶鬼气能够驱除。另外紫真檀香，主治恶毒风毒。降真香，烟雾直冲上天；召唤鹤群成群，盘旋在上。主治流行性时疫引起的狂热，驱除宅舍怪异和乡间声音。小儿佩戴它，可以辟除邪恶之气。
（陈嘉谟）按语：李东垣说：檀香能调畅气机且清香，引导芳香之物上行至最高部位。最适合搭配橙橘之类，佐以姜枣，并配合葛根、豆蔻、缩砂仁、益智仁，通行阳明经，位于胸膈之上，处于咽喉之中，同为理气的方剂。
Agarwood (Chenxiang)
Taste: Pungent. Nature: Slightly warm. Attribute: Yang. Toxicity: Non-toxic. Origin: Produced in various countries of the South Sea, as well as in Jiaozhou, Guangzhou, and Yazhou. It is largely similar to the knots of Toona sinensis (Chun tree) and Zelkova schneideriana (Jujube tree), selecting old trees to be felled. Soaked in rainwater, over a long period (wood forms resin only when encountering water), causing the bark and wood to rot and remain, while only the heartwood and knots survive. It is hard, black, and sinks in water; when burned, its fragrance is extremely clear and intense, hence the name Agarwood.
Although these two types are refined, they are not yet perfect. If used for treating diseases, they can still achieve efficacy. If it is tough and soft to chew, or naturally curls when shaved, this is also called Yellow Wax Agarwood. Its quality is extremely exquisite and rare. It acts like a god in treating diseases and enters medicine very quickly. It is suitable for making pills or powders but should be avoided from sun exposure or fire roasting. It supplements Ministerial Fire (Xianghuo), suppresses Yin, assists Yang, nourishes various Qi mechanisms, allowing them to penetrate heaven and earth. It can stop muscle spasms (Zhuanjin), vomiting, and diarrhea, and can drive away pain caused by Jin Kou Li (Lockjaw Dysentery).
Those that float on water and do not sink are called Zhan Xiang (Stack Fragrance); this type is the roughest. Those that are half-floating and half-sinking, level with the water surface, are called Jian Xiang (Decoction Fragrance); this type is slightly inferior. Among Jian Xiang, those shaped like chicken bones are called Chicken Bone Fragrance. (For medicinal use, if the agarwood is not hollow but has rotten channels, whereas Chicken Bone Fragrance has blood-eye patterns and is soft and tender.) Those shaped like ox heads are called Ox Head Fragrance. These all belong to the same species as Agarwood and are also of coarse quality. They are difficult to chew and add to prescriptions.
(Chen Jiamo) Commentary: *Yanyi* states: Agarwood protects and harmonizes Wei Qi (Defensive Qi) and is a superior grade medicine. Nowadays, people often grind it together with Lindera aggregata (Wuyao) to take, dispersing stagnant Qi. Used alone, its power is weak; when assisted by other herbs, it should be taken slowly for effect, providing benefit without harm. Other herbs cannot compare with it.
Sandalwood (Tanxiang)
Taste: Pungent. Nature: Warm. Attribute: Yang with slight Yin. Toxicity: Non-toxic. Origin: Produced in Nanhai Kunlun, as well as in Jianghuai and Heshuo regions. It specifically enters the Lung and Kidney meridians and circulates through the Yangming Meridian. Ground with vinegar and applied externally, it stops pain from malignant toxins; decocted in water, it raises Stomach Qi and promotes appetite. It can eliminate abdominal pain and cholera-like disorders, and驱驱 (drive away) evil ghostly qi. Additionally, Purple Genuine Sandalwood treats malignant wind toxins. Aquilaria sinensis (Xiangzhuxiang/Jiangzhen Xiang) smoke rises straight to the sky; it summons flocks of cranes circling above. It treats febrile heat caused by epidemic pathogens, driving away strange noises from houses and villages. Children wearing it wards off evil qi.
(Chen Jiamo) Commentary: Li Dongyuan stated: Sandalwood regulates Qi and is fragrant, guiding aromatic substances upward to the highest parts. It is most suitable to be paired with citrus fruits, assisted by Ginger and Jujube, and combined with Puerariae Radix (Gegen), Amomi Fructus Rotundus (Doukou), Amomi Fructus (Suosha), and Alpiniae Oxyphyllae Fructus (Yizhi), circulating through the Yangming Meridian, located above the chest and diaphragm, within the throat, forming a formula for regulating Qi.