Glacier 
To dream about a glacier indicates your unemotional feelings. You are closing down your emotions.
Grammar
To dream that you are studying grammar indicates that you are having trouble expressing your point of view or thoughts.
Gymnast
To dream of a gymnast represents intensity, poise, and flexibility. You are working towards your goals.
Harness
Harnesses are used to control or equip animals. To dream about a harness often reflects lack of freedom. You may be feeling restrained by your beliefs, and at times you feel others are holding you back.
History
To dream with historical themes suggests that you are subconsciously yearning to be in an earlier time. This may be related to past emotions or events, and may also indicate that you need to update your opinions and thinking. Enjoy living in the present.
Horizon
To dream of a horizon indicates the limitless potential of your life. It connotes the miracle in sunset, sunrise, birth, and death.
Hot Tub
Imagine sitting in a hot tub with steam coming out from the water beneath you. This evokes relaxation.
To dream about hot tub offers you a way out of your daily routine and stress. It brings instantaneous pleasure that belongs only to you. It can also reflect the hidden aspects of your unconscious.
Mercury
To see Mercury in your dream represents endurance, persistence, practicality, and rationalism. It also implies that you are working to your full potential.
Quarter
To dream of finding a quarter on the ground suggests luck is in the air. It cautions you to watch your feet, keep your eyes open, and be willing to accept that gifts sometimes arrive in small but significant packages.
To dream that someone gives you a quarter is telling you to relax your pride and accept help when offered.
Alternatively, when you dream of giving somebody a quarter, it is a message to be aware for opportunities to help others. Giving invites the vibration of receiving.